Biological Science Questions Flashcards by maybe micah ✧

Where do producers obtain their energy?

A. From other producers
B. From the consumers
C. From the decomposers
D. From the sun

D. From the sun

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Why do you experience not seeing things clearly for some seconds when you suddenly enter a well-lighted room after coming from a dark room?

A. The pupils are not adapted to the dark
B. The eyes are adapted to the light only
C. The pupils are not dilated yet
D. Light had caused temporary blindness

C. The pupils are not dilated yet

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What term is used to describe the ability to maintain a constant internal environment?

A. Metabolism
B. Growth and development
C. Homeostasis
D. Thermoregulation

C. Homeostasis

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What is the most common cause of cardiovascular disease?

A. Fatty deposits in the arteries
B. Inadequate supply of red blood cells
C. Lack of sodium in the diet
D. Increased heartbeat

A. Fatty deposits in the arteries

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Which is the smallest unit of life that can survive and reproduce on its own?

A. Cell
B. Organ
C. Tissues
D. Population

A. Cell

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Which region of a vertebrate forebrain is considered with the neutral-endocrine control of visceral activities?

A. Cerebellum
B. Thalamus
C. Hypothalamus
D. Pituitary

C. Hypothalamus

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Which of the following is the building block of carbohydrates?

A. Amino acid
B. Nucleotide
C. Fatty acid
D. Monosaccharide

D. Monosaccharide

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Why it is necessary for men to have more red blood cells per cubic millimeter of blood than women?

A. Man does strenuous activities and need more energy
B. They have bigger physique and need more blood
C. Man waste more blood cells and need extra
D. They are more prone to anemia disorders

A. Man does strenuous activities and need more energy

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Which of the following is the building block of proteins?

A. Amino acid
B. Nucleotide
C. Fatty acid
D. Monosaccharide

A. Amino acid

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Where does protein synthesis take place?

A. Ribosomes
B. Lysosomes
C. Endoplasmic reticulum
D. Golgi bodies

A. Ribosomes

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Why are our lips “redder” than our palm?

A. There is increased blood flow in the lips
B. Lips are heavily keratinized
C. Lip epidermis is thinner
D. Many blood vessels are located around the
lips

C. Lip epidermis is thinner

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Which of the following cannot be found in prokaryotes?

A. Cytoplasm
B. Plasma membrane
C. Membrane-bound nucleus
D. DNA

C. Membrane-bound nucleus

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What do we call a mutation that is brought about by the earth’s natural radioactivity?

A. Continuous
B. Induced
C. Lysosomes
D. Chloroplast

C. Lysosomes

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Which of the following organelles produces turbo pressure against the cell wall and mainly acts as water reservoir

A. Plastids
B. Vacuole
C. Lysosomes
D. Chloroplast

B. Vacuole

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What is the branch of microbial organisms that is used in the creation of genetically modified organisms?

A. Pseudomonas vulgaris
B. Bacillus thuringiensis
C. Agrobacterium tumefaciens
D. Escherichia coli

D. Escherichia coli

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What is the branch of zoology is devoted to the study of fish?

A. Helminthology
B. Ichthyology
C. Chondrichthyes
D. Ornithology

B. Ichthyology

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The process involved in the production of mRNA using DNA as a template is termed _______?

A. Transcription
B. Replication
C. Gene manipulation
D. Reverse transcription

A. Transcription

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What is the most abundant inorganic compound in the protoplasm?

A. Fluid
B. Blood
C. Plasma
D. Water

D. Water

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Which is the riches type of tropical rain forest in the Philippines?

A. Molave forest
B. Dipterocarp forest
C. Mangrove forest
D. Pine forest

B. Dipterocarp forest

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What muscle is described as involuntary, not striated, and have a single nucleus?

A. Smooth
B. Skeletal
C. Cardiac
D. Connective

A. Smooth

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We feel warmer just before it rains because __________

A. Heat is released by the evaporation of water
B. The clouds prevent heat from escaping the earth
C. There is an increased relative humidity
D. Heat is released by the condensation of water vapor

D. Heat is released by the condensation of water vapor

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Which of the following is not considered as a reproductive cell?

A. Gamete
B. Somatic cell
C. Egg cell
D. Sperm cell

B. Somatic cell

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The cell wall of plant is made of _______

A. Lipids
B. Cellulose
C. Protein
D. Cell membrane

B. Cellulose

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Which of the following is the correct sequence of the level of organization from lowest to highest?

A. Cells-system-organs-tissues
B. System-organs-tissues-cells
C. Cells-tissues-organs-system
D. Tissues-systems-cells-organs

C. Cells-tissues-organs-system

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At metaphase of the meiotic division, the chromosomes are attached to the spindle fibers as ________ A. Double chromatids B. Non-homologous pairs C. Single chromatid strands D. A tetrad of four chromatids

A. Double chromatids

Which of the following is an example of behavioral adaption? A. Thick green stems of the cactus plant B. Thick fur of the bear C. Shedding leaves during summer D. Presence of cuticle on the upper surface of the leaves

C. Shedding leaves during summer

The bipolar nature of the cell membrane is due to _______ A. Presence of carries B. Presence of oxygen C. Phospholipids bilayer D. Integral proteins

C. Phospholipids bilayer

Which of the following is made up of diploid number of cells? A. Zygote B. Sperm cell C. Egg cell D. Both B and C

A. Zygote

Which plant has underground stem modified for reproduction? A. Ginger B. Camote C. Tubers D. Strawberry

C. Tubers

Which of the following structures serve as a passageway of food and air? A. Epiglottis B. Trachea C. Pharynx D. Larynx

C. Pharynx

Which kind of relationship is exhibited by algae and fungi in lichen? A. Commensalism B. Parasitism C. Symbiosis D. Competition

C. Symbiosis

What do you call the finger-like folds on the inner linings of the small intestine? A. Villi B. Appendix C. Rugae D. Cecum

A. Villi

Aside from ADP, what else is the end production of the dark-reaction phase of photosynthesis? A. Carbon dioxide B. Sugar C. Carbon D. Starch

B. Sugar

What is that flap-like structure that prevents the food from going the wrong way during swallowing? A. Epiglottis B. Larynx C. Esophagus D. Pharynx

A. Epiglottis

Which pigment is dominant in red algae? A. Phycocyanin B. Fucoxanthin C. Chlorophyll D. Phycoerythrin

D. Phycoerythrin

What is the membrane that surrounds the lungs? A. Pleura B. Meninges C. Peritoneum D. Pericardium

A. Pleura

What is that 3-carbon sugar formed during the dark reaction phase of the photosynthesis? A. ADP B. NADPH C. ATP D. PGAL

D. PGAL (Phosphoglyceraldehyde) (3-PhosphoGlycerALdehyde)

What is the product of carbohydrate digestion? A. Fatty acid B. Glucose C. Amino acid D. Nucleic acid

B. Glucose

What process is responsible for the upward movement of the water in very tall trees? A. Osmosis B. Capillary action C. Turgor pressure D. Transpiration

B. Capillary action

What is the enzyme in the mouth that breaks starch to maltose? A. Peptidase B. Ptyalin C. Pepsin D. Maltase

B. Ptyalin

What do you call the types of symmetry where the body parts are paired on either side of the body? A. Dorsal B. Bilateral C. Radial D. Ventral

B. Bilateral

Which is considered as the respiratory center of the brain? A. Cerebellum B. Medulla oblongata C. Cerebrum D. Thalamus

B. Medulla oblongata

Which stage of incomplete metamorphism is undergone by grasshopper? A. Nymph, pupa, adult B. Egg, larva, pupa, adult C. Egg, nymph, adult D. Egg, pupa, adult

C. Egg, nymph, adult

Which of the following is NOT part of the thoracic cage? A. Clavicle B. Ribs C. Costal cartilages D. Sternum

A. Clavicle

Where does the toxin substance secreted by bees and ants through their sting originate? A. Silk glands B. Intestines C. Rectal glands D. Salivary glands

C. Rectal glands

What is the longest bone in the body? A. Humerus B. Femur C. Tibia-fibula D. Clavicle

B. Femur

Which cause our bones to turn brittle and easily break? A. Turning into muscle tissues B. Increase in flexibility C. Turbidity decrease D. Removal of collagen

D. Removal of collagen

How many bones does an adult human body has? A. 201 B. 200 C. 217 D. 206

D. 206

What do you call automatic responses to an external stimulus? A. Reflex B. Instinct C. Impulse D. All of these

A. Reflex

What structure provides flexible support and protection to the spinal cord? A. Skull B. Ribs C. Vertebral column D. Sternum

C. Vertebral column

Which hormone is insufficient in cretinism? A. Glucagon B. Adrenalin C. Insulin D. Thyroxine

D. Thyroxine

Which of the following is both an endocrine and an exocrine gland? A. Gastric glands B. Thyroid glands C. Pituitary glands D. Pancreas

D. Pancreas

What organ is controlled by the automatic nervous system? A. Skeletal B. Muscles C. Heart D. Both A and B

C. Heart

What do you call food in a semi-liquid form, partially digested and mixed with hydrochloric acid? A. Gastric secretion B. Gastric fluid C. Mucosa D. Chyme

D. Chyme

Which is considered the master gland due to its influence on the activity of all the other glands? A. Thyroid B. Adrenal C. Pituitary D. Parathyroid

C. Pituitary

Which part of the brain is responsible for intelligence, memory, and learned behavior? A. Cerebellum B. Cerebrum C. Medulla D. Thalamus

B. Cerebrum

Which of these materials is not a major component of the plasma membrane? A. Phospholipids B. Glycoprotein C. Proteins D. DNA

D. DNA

Which form of RNA delivers information from DNA to be used in making protein? A. Messenger RNA B. Ribosomal RNA C. Transfer RNA D. All of the above

A. Messenger RNA

Which of the following is not a type of cell? A. Bacterium B. Amoeba C. Sperm D. Virus

D. Virus

Which property of water is probably MOST important for the functioning of organisms at the molecular level? A. Cohesion and high surface tension B. High specific heat C. High heat of vaporization D. Versatility as a solvent

D. Versatility as a solvent

Which of the following statements is true of diffusion? A. It requires an expenditure of energy by the cell B. It is a passive process C. It occurs when molecules move from a region of lower concentration to one of higher concentration D. It requires a membrane

B. It is a passive process

Which of the following is FALSE in comparing prophase I of meiosis and prophase of mitosis? A. The chromosomes condense in both B. Tetrads form in both C. The nuclear envelope disassembles in both D. A spindle forms in both

B. Tetrads form in both

Which are small, irregularly-shaped cells without nuclei but are rich in ATP? A. Leukocytes B. Thrombocytes C. Lymphocytes D. Erythrocytes

D. Erythrocytes

What branch of Biology is involved when one is studying the characteristic structure and functions of all kinds of cells? A. Cytology B. Morphology C. Physiology D. Histology

A. Cytology

Which part of seed appears as a scar which marks the entry of the pollen tube during fertilization? A. Seed leaf B. Cotyledon C. Testa D. Hilum

D. Hilum

Which type of tissue is responsible for the secondary growth in stems and roots of vascular plants? A. Meristematic cells B. Cambium C. Palisade layer D. Epidermis

B. Cambium

Which biome grows tropical grassland with scattered individual trees and large herbivores? A. Tundra B. Rain forest C. Grassland D. Savanna

D. Savanna

What do you call the process in birds wherein they shed off features at least once a year? A. Skinning B. Molting C. Furrowing D. Migrating

B. Molting

What chemical controls metamorphosis among insects? A. Enzymes B. Estradiol C. Pheromones D. Ethylene

A. Enzymes

Which of the following makes up the plant cell wall? A. Nucleic acid B. Cellulose C. Protein D. Lipids

B. Cellulose

Which of the following is not true of fungi? A. Some are pathogenic B. Some are photosynthetic C. Some are edible D. Form symbiotic relation with algae

B. Some are photosynthetic

Which of the following is not true of plants? A. Some are pathogenic B. Some are photosynthetic C. Some are edible D. Form symbiotic relation with algae

D. Form symbiotic relation with algae

Which of the following is considered multi-cellular? A. Embryo B. Fertilized egg C. Egg cell D. Sperm cell

A. Embryo

What hormone promotes the growth of the uterine lining for the implantation of the embryo? A. Lactogenic hormone B. Progesterone C. Testosterone D. Oxytocin

B. Progesterone

Which of the following pair of organisms are closely related? A. Spider and mosquito B. Frog and crocodile C. Man and monkey D. Ants and aphids

C. Man and monkey

What does it mean if the blood pressure of a human is 110/70? A. The systolic pressure is 70 B. The diastolic pressure is 70 C. The pulse rate is 110 beats per minute D. Both B and C

B. The diastolic pressure is 70

Which of the following happens when man exhales? A. The residual volume of the lungs decreases B. The diaphragm contracts C. The volume of the thoracic cavity decreases D. The lung contracts

C. The volume of the thoracic cavity decreases

Which of the following regulate breathing? A. RBC concentration B. Number of hemoglobin C. Hormone level in blood D. CO₂ and O₂ concentration and pH level sensors

D. CO₂ and O₂ concentration and pH level sensors

Which of the following has the lowest velocity of blood flow? A. Veins B. Arteries C. Capillaries D. Arterioles

A. Veins

How many carbon atoms can each pyruvic acid supply into the Krebs cycle? A. 8 B. 6 C. 4 D. 2

D. 2

How many oxygen is required each time to a molecule of glucose is completely oxidized through aerobic respiration? A. 3 B. 6 C. 12 D. 24

B. 6

Which of the following will not be accepted by glycolysis for catabolism? A. Starch B. Glycerol C. Fatty acid D. Sucrose

C. Fatty acid

Which of the following characteristic is common between echinoderms and cnidarians? A. They are both radically symmetrical B. They have segmented bodies C. Both have stinging cells D. They have three embryonic tissue layers

A. They are both radically symmetrical

Which of the following is true of Phylum Chordata? I. Presence of notochord that provides skeletal support II. Pharyngeal slits that have become modified for gas exchange III. Dorsal hallow nerve cord that develops into the central nervous system A. II and III B. I and II C. I and III D. I, II and III

D. I, II and III

Which of the following cannot be associated with fungi? A. Absorptive nutrition B. Decomposers C. Autotrophs D. Spore production

C. Autotrophs

Which of the following does not involve mitosis? A. Development of embryo B. Growth C. Production of gametes D. Repairing of damaged tissues

C. Production of gametes

87.Which of the followings is true of mammals? I. They have four chambered heart II. They produce milk for the young III. They are warm blooded A. I and II B. II and III C. I and III D. I, II and III

D. I, II and III

What term describes an egg develop into a new organism without itself being fertilized be a sperm? A. Regeneration B. Conjugation C. Parthenogenesis D. Fusion

C. Parthenogenesis

Which of the following is responsible for formation of blood cell? A. Cartilage B. Bone marrow C. Joints D. Tendons

B. Bone marrow

What is most likely happen when a species cannot adapt to the changes in the environment? A. It will be transform to another form B. It will become extinct C. It will be isolated D. It will grow old

B. It will become extinct

What term is used to describe the released of matured egg cell from the ovary? A. Fertilization B. Copulation C. Ovulation D. Germination

C. Ovulation

Which of the following blood cells is responsible for blood clotting? A. Erythrocytes B. Leukocytes C. Thrombocytes D. Neutrophils

C. Thrombocytes

Where does ectopic pregnancy occur? A. Uterus B. Ovary C. Cervix D. Fallopian tube

D. Fallopian tube

Why is cell membrane semi permeability important? A. It is important in determining the size of the cell B. It controls the kind of substances that enters and leaves the cell C. It controls the pressure and energy gradient D. It allows the molecules to diffuse freely in and out of the cell

B. It controls the kind of substances that enters and leaves the cell

What theory of evolution accounts for snake’s disappearance of legs and development of giraffe’s long neck? A. Theory of use and disuse B. Theory of natural selection C. Theory of chromosomal change D. Theory of action and interaction

A. Theory of use and disuse

Which of the following is an exocrine gland? A. Plastids and pigments B. Asters and centrioles C. Chloroplasts and vacuoles D. Cell wall and cell membrane

B. Asters and centrioles

Which of the following is an exocrine gland? A. Thyroid gland B. Salivary gland C. Pituitary gland D. Adrenal gland

B. Salivary gland

Which of the following is not an accessory organ of digestion? A. Liver B. Pancreas C. Salivary gland D. Adrenal gland

D. Adrenal gland

What hormone stimulates the development of male secondary sex characteristics? A. Estrogen B. Prolactin C. Testosterone D. Progesterone

C. Testosterone

Which of the following parts performs both as reproductive and urinary functions in males? A. Ureter B. Testes C. Urethra D. Scrotum

C. Urethra

Which of the following is a part of the process of chemiosmosis? A. Protons move along the electron transport chain B. Water molecules are split C. Hydrogen ions pass through membranes D. Light is absorbed by chlorophyll

C. Hydrogen ions pass through membranes

During mitosis, a double-stranded chromosome is attached to a spindle fiber at the... A. cell plate B. centromere C. centrosome D. centriole

B. centromere

Which is an effect of drugs on cells? A. Produce toxic substance B. Discontinuous cell activity C. Cause damage to their structure D. Poison the cell liquid

C. Cause damage to their structure

The cell wall of plant is made of... A. Lipids B. Cellulose C. Protein D. Cell membrane

B. Cellulose

Which is the storage cell of plants? A. Microtubule B. Collenchyma C. Meristem D. Parenchyma

D. Parenchyma

Which results from drinking saltwater? A. Poisoning of the cells B. Dehydration of the cells C. Increase in cell pressure D. Bursting of the cells

B. Dehydration of the cells

What kind of tissue lines our skin and what is its important function? A. Nerve tissue; responsible for reflexes B. Epithelial; protection from ultraviolet radiation C. Nerve tissue; receive stimuli on the skin D. Epithelial; produce new cells when peeled off

D. Epithelial; produce new cells when peeled off

At metaphase of the first meiotic division, the chromosomes are attached to the spindle fibers as _____________________________ A. double chromatids B. non-homologous pairs C. single chromatid strand D. a tetrad of chromatids

D. a tetrad of chromatids

Which type of cell would probably provide the best opportunity to study lysosomes? A. Leaf B. Nerve C. Muscle D. White blood

D. White blood

Which best describes meiosis as another form of cell division with accompanying nuclear changes? A. The nuclear changes follow one another indefinitely B. Each new cell has double the amount from both parents C. The nucleoli break up into two parts and disappear D. Each new cell has half the number of chromosomes

D. Each new cell has half the number of chromosomes

How are mitochondria and chloroplasts similar to bacteria? They... A. are larger than normal cells B. are bounded by a single membrane C. lack ribosomes D. have a limited amount of genetic material

D. have a limited amount of genetic material

Which is the energy storage compound used to do all forms of work of the cell? A. Electron B. Adenine C. Nicotinamide D. Adenosine triphosphate

D. Adenosine triphosphate

Meiosis reduces genetic make-up by half. What process brings it back to diploid state? A. Menstruation B. Fertilization C. Ejaculation D. Mitosis

B. Fertilization

The bipolar nature of the cell membrane is due to... A. presence of carriers B. presence of glycolipids C. phospholipid bilayer D. integral protein

C. phospholipid bilayer

When a red blood cell is placed in distilled water, it... A. plasmolysis B. remains the same C. shrinks D. swells

D. swells

The “eyes” of potato are actually... A. internodes B. nodes C. leaf scars and buds D. stems

C. leaf scars and buds

Which of these is NOT a fruit? A. Cucumber B. Ampalaya C. Squash D. Carrot

D. Carrot

Which plant has underground stem modified for reproduction? A. Banana B. Bermuda C. Tubers D. Strawberry

C. Tubers

Which plants formed the vast coal beds during the carboniferous period? A. Lycopods B. Conifers C. Angiosperms D. Gymnosperms

A. Lycopods

What kind of relationship is exhibited by an algae and a fungus in lichen? A. Commensalism B. Parasitism C. Mutualism D. Competition

C. Mutualism

Chlorophyll appears green because the green portion of light is... A. dispersed B. absorbed C. refracted D. reflected

D. reflected

The end products of dark reaction phase of photosynthesis are ADP and... A. carbon dioxide B. sugar C. carbon D. nitrogen

B. sugar

Which gas is needed by the seed during germination? A. Nitrogen B. Carbon dioxide C. Hydrogen D. Oxygen

D. Oxygen

Which is the universal energy source of the cell of all living things? A. Carbon B. ATP C. H2O D. PGAL

B. ATP

When the staminate flower is found in one plant and the pistillate flower on another, the plants is described as... A. complete B. monoecious C. robust D. dioecious

D. dioecious

Which pigment is dominant in red algae? A. Phycocyanin B. Fucoxanthin C. Chlorophyll D. Phycoerythrin

D. Phycoerythrin

Which process during photosynthesis involves the addition of hydrogen? A. Oxidation B. Hydration C. Carbonation D. Reduction

D. Reduction

The dark reaction phase of photosynthesis consists of a series of chemical reactions which end up with the formation of a 3-carbon sugar called... A. ADP B. NADPH C. ATP D. PGAL

D. PGAL (Phosphoglyceraldehyde) (3-PhosphoGlycerALdehyde)

Which cell structure regulates the opening and closing of the stomata? A. Phloem B. Xylem C. Companion D. Guard

D. Guard

Spraying some plants with combination of auxins and gibberellins will... A. promote ripening of fruits B. result to seed dormancy C. allow division of cells D. enlarge fruit growth

D. enlarge fruit growth

All flowering plants belong to __________________ A. conifers B. angiospermae C. filicinae D. gymnospermae

B. angiospermae

Fruit growers often propagate their plants by a sexual means because the resulting off spring will... A. be an improved variety than the parent B. show little variation from the parent C. bear larger fruit than the parent D. show no environmental variation

A. be an improved variety than the parent

Which of the following is incorrectly paired? A. Cnidaria- corals B. Porifera- sponge C. Annelida- earthworm D. Platyhelminthes-Ascaris

D. Platyhelminthes-Ascaris

What process is cause for the upward movement of water in very tall trees? A. Transpiration B. Osmosis C. Turgor pressure D. Air pressure

A. Transpiration

Which popular plant is described as carnivorous? A. Water hyacinth B. Cactus C. Pitcher plant D. Kataka-taka

C. Pitcher plant

What is the purpose of RA 8749? A. Prevent rather than control air pollution B. Formulate air pollution management C. Utilize sustainable development D. All of the above

D. All of the above

What do you call the male gametophyte of an angiosperm? A. Pollen B. Ovule C. Seed D. Petal

A. Pollen

Which root system is the best adapted for anchorage? A. Secondary B. Tertiary C. Taproot D. Fibrous

C. Taproot

Egg-laying mammals are called... A. viviparous B. primates C. oviparous D. marsupials

C. oviparous

To what order do pouch-bearing mammals belong? A. Marsupials B. Craniata C. Monotremata D. Placental mammals

A. Marsupials

Large colonies belonging to class Anthozoa secrete hard skeletons of lime which later form reefs A. Sea anemone B. Obelia C. Coral D. Jellyfish

C. Coral

When body parts are paired on either side of the body, this type of symmetry is called... A. Dorso-ventral B. Bilateral C. Radial D. Dorsal

B. Bilateral

What substance do leeches secrete which keeps the blood they feed on liquid state? A. Hemoglobin B. Ecdysone C. Anticoagulant D. Fibrinogen

C. Anticoagulant

One who specializes in all kinds of fishes and their characteristics has expertise on... A. Taxonomy B. Histology C. Entomology D. Ichthyology

D. Ichthyology

In protozoans, digestion occurs in the... A. stomach B. contractile vacuole C. ribosome D. food vacuole

D. food vacuole

What is a distinguishing characteristic of Homo sapiens over the lower mammals? A. Blood vessels B. Sensitive skin C. Large brain D. Endoskeleton

C. Large brain

What kind of adaptation enables the walking stick to elude its enemies? A. Aggressive mimicry B. Aggressive adaptation C. Protective mimicry D. Protective coloration

D. Protective coloration

Which stages of incomplete metamorphosis is undergone by grasshopper? A. Nymph, pupa, adult B. Egg, larva, pupa, adult C. Egg, nymph, adult D. Egg, pupa, adult

C. Egg, nymph, adult

Which are the hosts of Ascaris lumbricoides and Ascaris suum? A. Cow and man B. Man and dog C. Cow and pig D. Man and pig

D. Man and pig

Two organisms can be identified as belonging to the same species if they can ____________________________________ A. eat the same kind of food B. breed in a natural setting C. tolerate one another in nature D. survive together in nature

B. breed in a natural setting

Arthropods exhibit fast and coordinated movement because they possess... A. an endoskeleton B. jointed appendages C. exoskeleton D. bilateral symmetry

B. jointed appendages

The following statements are true of spiders EXCEPT A. Have rectal glands for potassium and water reabsorption B. Tagmata include cephalothorax and abdomen C. Contain silk glands for web making D. Possess 3 pairs of legs

D. Possess 3 pairs of legs

The relationship that exists between insects and flowering plants is called... A. parasitism B. predation C. mutualism D. commensalism

C. mutualism

Which of the following causes our nose to “run” when we cry? A. The lungs release water vapor B. Mucous glands are activated C. Tears enter the duct to the nasal cavity D. The sinuses release water

C. Tears enter the duct to the nasal cavity

What is the main function of the peripheral nervous system? A. Communicates with the endocrine glands B. Regulates our heartbeat and breathing C. Controls our emotions and intelligence D. Connects central nervous system to all organs

D. Connects central nervous system to all organs

What causes our bones to turn brittle? A. Turning into muscle tissue B. Increase in flexibility C. Turbidity decreased D. Removal of collagen

D. Removal of collagen

Which part of the neuron conducts impulse from other neurons toward the cell body? A. Axon B. Ganglia C. Synapse D. Dendrite

D. Dendrite

The tendency to react automatically to an external stimulus is called a/an ___________________ A. Habituation B. Aggression C. Imprinting D. Reflex

D. Reflex

Which hormone promotes the development of secondary female sexual characteristics such as broad pelvis and enlarged breasts? A. Testosterone B. Estrogen C. Melatonin D. Growth

B. Estrogen

Which part of the ear is dangerously affected when sound is of hundred decibels? A. Pinna B. Eustachian tube C. Semi-circular canal D. Tympanic membrane

D. Tympanic membrane

What organs cause high concentration of calcium in the blood? A. Liver and Pancreas B. Pituitary and Testis C. Thyroid and Parathyroid D. Pineal body and Thymus

C. Thyroid and Parathyroid

People who live in high altitude have blood that is described to have blood cells A. High number of white B. Low number of red C. Same number of red D. High number of red

D. High number of red

Creativity is a desirable trait that should be developed among our students. Describe a creative person A. Creates beautiful set-ups B. Imitates scientists at work C. Originates own procedures D. Announces same solutions

C. Originates own procedures

If the flow of blood in a vessel is toward the heart then the vessel is identified as a... A. Ventricle B. Artery C. Vein D. Atrium

C. Vein

The funnel shaped opening through which the egg cell is released to is the... A. Umbilical cord B. Uterus C. Fallopian tube D. Proximal tubules

C. Fallopian tube

Which one is insufficient in cretinism? A. Insulin B. Adrenalin C. Parathormone D. Thyroxin

D. Thyroxin

When there is no food available for days, what could serve as the fuel source of the cells in your body? A. Fats in adipose tissue B. Albumin in the blood C. Cholesterol in blood vessels D. Bone marrow inside the bone

A. Fats in adipose tissue

What instrument has a flexible scope that is used to examine the esophagus and stomach? A. ultrasound B. laser C. endoscope D. scanner

C. endoscope

Where does exchange of materials between the blood and other body tissues take place? A. Platelets B. Veins C. Arteries D. Capillaries

D. Capillaries

What explains why our lips are “redder” than out palm? A. Many blood vessels are located around the lips B. Lips epidermis is thinner C. Lips are heavily keratinized D. There is increased blood flow in the lips

B. Lips epidermis is thinner

Which part of breathing occurs when the diaphragm muscles are pulled downwards, thus increasing the chest cavity? A. Expiration B. Release of energy C. Release of gases D. Inspiration

D. Inspiration

In an experiment, which is the condition being introduced and whose effect is being observed? A. Conclusion formulated B. Constant variable C. Manipulated variable D. Tentative variable

C. Manipulated variable

Which of the following pancreatic fluids is responsible for the breakdown of fat? A. Chymotrypsin B. Amylase C. Trypsin D. Lipase

D. Lipase

Which part of the brain controls our rate of breathing? A. Cerebellum B. Cerebrum C. Spinal cord D. Medulla

D. Medulla

Through what part does the embryo obtain its nourishment from the mother? A. oviduct B. food tubules C. fallopian tube D. umbilical cord

D. umbilical cord

What organ is controlled by the autonomic nervous system? A. Brain B. Heart C. Spinal cord D. Skeletal muscles

B. Heart

What is one of the main functions of the large intestine? A. Excrete undigested food B. Digest food into liquid form C. Excrete bile pigments from ducts D. Complete the digestion of proteins

A. Excrete undigested food

What do you call food in a semi-liquid form, partially digested and mixed with hydrochloric acid? A. Mucosa B. Chyme C. Saliva D. Bolus

B. Chyme

Which would you advise children to prevent osteoporosis? A. More intake of all vitamins B. Consistent bone density test C. Less bone exercise and fatigue D. Adequate calcium and Vitamin D

D. Adequate calcium and Vitamin D

Which is considered the endocrine master gland due to its influence on the activity of all the other glands? A. Thyroid B. Adrenal C. Pituitary D. Parathyroid

C. Pituitary

What enzyme is secreted by the pancreas which splits sugar? A. Lipase B. Pepsin C. Trypsin D. Amylase

D. Amylase

What do we get from carbohydrates and fats? A. Cell builders B. Tissue builders C. Heat and energy D. Growth regulators

C. Heat and energy

What secretes substance which enables the sugar to be stored in the liver? A. Islets of Langerhans B. Adrenal medulla C. Adrenal cortex D. Thyroid

A. Islets of Langerhans

What sac protects the heart? A. Pericardium B. Septum C. Atrium D. Valve

A. Pericardium

What BEST describes respiration? A. Taking in carbon dioxide and releasing oxygen B. Taking in oxygen and releasing carbon dioxide C. Breathing in a mixture of different gases D. Breathing in of pure gas

B. Taking in oxygen and releasing carbon dioxide

Which type of muscle tissue found in the walls of our stomach is responsible for the process of peristalsis? A. Striated B. Cardiac C. Smooth D. Voluntary

C. Smooth

Which of the hormone triggers ovulation? A. Follicle-stimulating B. Testosterone C. Luteinizing D. Prolactin

C. Luteinizing

What do we call a prediction that is made based on educated guess? A. Inference B. Hypothesis C. Interpolation D. Extrapolation

B. Hypothesis

How does the liver assist the digestive system? A. Stores starch B. It secretes bile C. Acts on protein food D. Mixes with the pancreatic juice

B. It secretes bile

What structures in the tongue make it distinguished food quality? A. Nerves B. Tasters C. Taste buds D. Taste epithelium

C. Taste buds

Which protein found in the plasma is responsible for blood clothing? A. Fibrinogen B. Albumin C. Globulin D. Serum

A. Fibrinogen

White blood cells are the “soldiers” of the body. They fight the disease-causing organisms. They are the _______________ A. Antigens B. Antibodies C. Phagocytes D. Erythrocytes

C. Phagocytes

What blood test is used to provide information about agglutination reactions between donor and recipient blood? A. Clotting test B. Blood count C. Blood chemistry D. Type and cross-match

D. Type and cross-match

Which produce the hormone MOST closely associated with the control of calcium metabolism? A. Ovaries B. Pancreas C. Adrenal glands D. Parathyroid glands

D. Parathyroid glands

What is the function of the lymph? A. Transport oxygen B. Contains fibrinogen C. Enables the blood to clot D. Protects the body from infection

D. Protects the body from infection

Which part of the brain is responsible for intelligence, memory and learned behavior? A. Cerebellum B. Cerebrum C. Thalamus D. Medulla

B. Cerebrum

What is the major problem involved in organ transplants? A. Phagocytes B. Sex of donor C. Race of recipient D. Antigen-antibody reaction

D. Antigen-antibody reaction

What special equipment is placed inside the heart to generate electrical impulse? A. Endoscope B. Pacemaker C. Heart pump D. Artificial valve

B. Pacemaker

The modern horse has fewer toes than its ancestors’. Such change is governed by... A. use and disuse B. natural selection C. reduction division D. chromosomal deletions

B. natural selection

Which theory on how life began do chemists and geologists agree on today? A. Spontaneous generation B. Special creation C. Cosmozoic D. Naturalistic

A. Spontaneous generation

As green plants make food, they are... A. first-order consumers B. second-order consumers C. decomposers D. producers

D. producers

The producers in a pond are usually... A. tadpoles B. algae C. bacteria D. small fish

B. algae

A series in which each organism serves as food for the next organism is a... A. food chain B. population C. community D. niche

A. food chain

Substances from dead plants and animals are returned to the water by... A. producers B. consumers C. decomposers D. top consumers

C. decomposers

The special role of each organism in a food pyramid is its... A. system B. niche C. physical environment D. community

B. niche

The consumers in a food chain in a pond are the... A. algae B. plants C. bacteria D. animals

D. animals

If you study how a fish is fitted for life in a quiet water, you are studying its... A. food pyramid B. adaptation C. interdependence D. population

B. adaptation

All the plants and animals in a pond form... A. an environment B. a community C. a population D. an ecosystem

B. a community

Many interdependent food chains in a forest make up a... A. food pyramid B. pyramid of biomass C. food web D. habitat

C. food web

The second-order consumers in a food pyramid get their food directly from... A. carnivores B. decomposers C. producers D. herbivores

D. herbivores

All the plants and animals on earth... A. create new matter B. recycle the same matter C. create new energy D. recycle the same energy

B. recycle the same matter

An animal’s heartbeat and breathing are slowed down when it... A. enters a habitat B. hunts for food C. occupies a niche D. hibernates

D. hibernates

If you catch a fish and eat it, you may be... A. a first-order consumer B. a second-order consumer C. a decomposer D. a scavenger

B. a second-order consumer

The part of sunlight absorbed most rapidly by water is... A. red light B. blue light C. violet light D. green light

A. red light

The increased effect of a pesticide on organisms that feed on each other in a lake is called... A. biological conservation B. biological magnification C. eutrophication D. nitrification

B. biological magnification

Plants and animals in the same ecosystem usually have similar... A. shapes B. sizes C. ways of obtaining food D. environmental needs

D. environmental needs

Which of the following refers to a secondary carnivore? A. Eats only plants B. Gets energy directly from the sun C. Gets energy through photosynthesis D. Has less food energy available to it than consumers at lower tropic levels

B. Gets energy directly from the sun

Which of the following statements is true regarding a food chain? A. There are more herbivores than carnivores B. Each higher trophic level has more energy available to it C. The number of organism at each trophic level is not related to energy D. The biomass of third-order consumers is greater than the biomass of second-order consumers

A. There are more herbivores than carnivores

Which of the following is the result of biological magnification? A. Energy is lost at each trophic level of the food chain B. The greenhouse effect will be most significant at the poles C. Top-level predators may be most harmed by toxic environmental chemicals D. DDT has spread throughout the ecosystem and is found in almost every organism

C. Top-level predators may be most harmed by toxic environmental chemicals

Why are green plants considered autotrophs? A. They have many pigments that capture light B. They can build simple inorganic substances into complex organic substance C. They can build any kind of substances D. They depend on other sources for their food

B. They can build simple inorganic substances into complex organic substance

In what trophic level of the food pyramid are consumers greatest in number? A. first trophic B. second trophic C. third trophic D. fourth trophic

D. fourth trophic

In a pond or desert, light, warmth, water, minerals, carbon dioxide, and oxygen make up the... A. ecosystem B. community C. population D. physical environment

D. physical environment

Why do most plants look green? A. The chlorophyll in plants captures green light for photosynthesis B. The chlorophyll in plants reflects wavelengths of green light C. The chloroplasts in plants are surrounded by two green membranes D. The chloroplasts in plants make green sugar during photosynthesis

B. The chlorophyll in plants reflects wavelengths of green light

Green plants make glucose from... A. water and carbon dioxide B. chlorophyll and sunlight C. water and oxygen D. oxygen and carbon dioxide

C. water and oxygen

A male structure in the flowering plant is the... A. ovary B. ovule C. pistil D. stamen

D. stamen

Transfer of pollen from the stamen of one flower to the pistil of another is... A. fertilization B. cross-pollination C. self-pollination D. reproduction

B. cross-pollination

Cuttings and graftings are examples of... A. adaptation B. fertilization C. vegetative propagation D. seed dispersal

C. vegetative propagation

Water and minerals are carried upward in plant stems in the... A. phloem B. xylem C. guard cells D. stomata

B. xylem

Both gymnosperms and angiosperms A. produce flowers B. produce seeds C. have needle-like leaves D. lose all their leaves in the fall

D. lose all their leaves in the fall

Vegetative reproduction is a form of... A. pollination B. seed dispersal C. sexual reproduction D. asexual reproduction

D. asexual reproduction

Corn and other monocots have each of the following structures EXCEPT A. parallel veins B. seeds C. a layer of cambium D. xylem and phloem

C. a layer of cambium

Green plants store the energy of sunlight by the process of... A. cellular respiration B. photosynthesis C. oxidation D. reproduction

B. photosynthesis

In plants, food is usually made in the... A. roots B. stems C. leaves D. rootlets

C. leaves

One function of roots is to... A. take in carbon dioxide B. give off oxygen C. anchor plant to the soil D. produce food

C. anchor plant to the soil

Multicellular plants have many specialized structures. What function does xylem perform in multicellular vascular plants? A. The xylem transports water and minerals from the roots to the leaves B. The xylem is the place where photosynthesis takes place in a plant C. The xylem breaks down sugar into a form that plant cells can use D. The xylem is a woody tissue that fills the stem of a plant

A. The xylem transports water and minerals from the roots to the leaves

Which is not a primary function of the stem? A. absorption B. conduction C. support D. storage

A. absorption

Ginger is a ___________. A. bulb B. corm C. rhizome D. tuber

C. rhizome

The primary functions of the root are ___________________________. A. conduction and storage B. storage and anchorage C. anchorage and absorption D. absorption and conduction

C. anchorage and absorption

Carbon dioxide used in photosynthesis enters the leaves through the... A. root system B. stomata C. phloem D. fibrovascular bundles

B. stomata

All of the following reduce loss of water from plants except... A. bark B. waxy layers on leaves C. closing of stomata D. opening of stomata

D. opening of stomata

The primary functions of leaves are... A. photosynthesis and transpiration B. transpiration and respiration C. respiration and digestion D. respiration and photosynthesis

A. photosynthesis and transpiration

Which of the following is not a correctly stated difference between monocots and dicots? A. parallel veins in monocots; branching, netlike venation in dicot leaves B. vascular bundles scattered in monocot stems; central vascular stele in dicot stems C. flower parts in threes in monocots; flower parts in multiples of four or five in dicots D. usually only primary growth in monocots; secondary growth in many dicots

B. vascular bundles scattered in monocot stems; central vascular stele in dicot stems

How are the processes of photosynthesis and cellular respiration connected? A. Both processes begin with oxygen B. Both processes require sunlight C. Each processes takes place only in plant cells D. Each process makes the material needed in the other process

D. Each process makes the material needed in the other process

Why do cells need oxygen? A. Oxygen is used during the process of fermentation B. Oxygen is used during the process of cell division C. Oxygen is used during the process of cellular respiration D. Oxygen is used during the process of meiosis

C. Oxygen is used during the process of cellular respiration

What is the result of cellular respiration? A. Energy is produced from radiant sunlight and carbon dioxide B. Energy is produced from sugar molecules and oxygen C. Sunlight is converted into sugar molecules and oxygen D. Sunlight is converted into water molecules

B. Energy is produced from sugar molecules and oxygen

Which of these describes a reproduction method of sexual organism? A. Forming a tuber B. Fusing of sex cells from two parents C. Producing runners D. Division through binary fission

B. Fusing of sex cells from two parents

The diaphragm is used in breathing by each of the following animals except the... A. kangaroo B. baboon C. frog D. human

C. frog

Each of the following vertebrates is cold-blooded EXCEPT A. fish B. amphibians C. birds D. reptiles

C. birds

The embryo develops within the mother in most... A. mammals B. reptiles C. amphibians D. fish

A. mammals

A feature that relates the platypus to the reptiles is... A. egg-laying B. cold-bloodedness C. scales D. a diaphragm

A. egg-laying

The sea urchin’s body is organized around the organism’s center, like the spokes of a wheel. What kind of symmetry does the sea urchin have? A. bilateral B. radial C. asymmetrical D. unilateral

B. radial

Most vertebrates reproduce sexually. When does fertilization occur in sexual reproduction? A. When a male animal releases sperm and a female animal releases eggs B. When part of an organism breaks off and begins to grow independently C. When the cells of an embryo begin to differentiate and become specialized D. When the nucleus of a sperm cell fuses with the nucleus of an egg cell

D. When the nucleus of a sperm cell fuses with the nucleus of an egg cell

Which of the following is a difference between invertebrates and vertebrates? A. Vertebrates have exoskeletons, and invertebrates have endoskeletons B. Invertebrates reproduce only asexually, vertebrates only reproduce sexually C. Vertebrates have a backbone, while invertebrates do not D. Invertebrates have bilateral symmetry, while vertebrates have radial symmetry

C. Vertebrates have a backbone, while invertebrates do not

Which of the following is a function of the reproductive system? A. To produce all the body’s hormones B. To regulate the body temperature C. To make the hormones that fight disease D. To regulate the development of male and female characteristics

D. To regulate the development of male and female characteristics

The animal phylum that contains the largest number of different species is the... A. echinoderms B. chordates C. arthropods D. roundworms

C. arthropods

A hydra, which has two layers of body cells, is... A. a coelenterate B. a flagellate C. an echinoderm D. a porifera

A. a coelenterate

Unlike amphibians, reptiles... A. are covered with scales B. have a circulatory system C. are cold-blooded D. lays eggs

A. are covered with scales

Both an octopus and a clam are... A. arachnids B. crustaceans C. tunicates D. molluscs

D. molluscs

A fruit is a... A. ripened ovule B. ripened ovary C. ripened bud D. ripened stigma

B. ripened ovary

An imperfect flower is one that lacks either... A. sepals or petals B. stamens or pistils C. petals or stamens D. pistils or sepals

B. stamens or pistils

Pollination is the _____________________________________ A. union of a person nucleus with an egg nucleus B. growth of a pollen tube in a style C. penetration of an embryo sac by a pollen tube D. transfer of pollen grains from an anther to a stigma

D. transfer of pollen grains from an anther to a stigma

The protist which can cause malaria when transmitted by the bite of the female anopheles mosquito is... A. Plasmodium falcifarum B. Plasmodium ovale C. Plasmodium vivax D. Plasmodium

C. Plasmodium vivax

The arthropod which is an arachnid is the ______________ A. butterfly B. spider C. beetle D. cockroach

B. spider

The squid belongs to phylum __________________ A. Chordata B. Mollusca C. Echinodermata D. Nemathelminthes

B. Mollusca

A dinner in a seafood restaurant includes clams, squid, and tuna. What phyla are represented? A. porifera and mollusca B. cnidaria and chordate C. mollusca and chordate D. mollusca and arthropoda

C. mollusca and chordate

The body temperature of cold-blooded animals... A. is 10 deg. C B. is 100 deg. C C. changes with the environment D. remains constant

C. changes with the environment

Each of the following is a primate EXCEPT a... A. tarsier B. gorilla C. kangaroo D. human

C. kangaroo

Development from a fertilized egg to adult may occur in either two ways. What do you call animals that are born resembling adults of the species, just like man? A. viviparous B. oviparous C. ovoviviparous D. none of them

A. viviparous

Vivian and Carlo are two amateur fossils hunters, who were unable to unearth a complete fossil of mammals. How could they determine whether it was a herbivore, carnivore, or omnivore? A. Based on the skull B. Based on the type of teeth C. Based on the phalanges D. Based on the vertebral column

B. Based on the type of teeth

Amphibians have adaptations that protect them from very cold and very warm temperatures. During the cold winter months they become inactive. They bury themselves in mud until the temperature warms up. What do you call the period of inactivity during winter? A. Hibernation B. Aestivation C. Incubation D. Adaptation

C. Incubation

Amoeba proteus is a very common amoeba that you use in the laboratory for experiments. You have probably observed their mode of motility. What do they use for locomotion? A. cilia B. flagella C. pseudopodia D. feet

C. pseudopodia

What is the relationship between the cattle and the bacteria and protozoa living within their stomachs? A. parasitism B. commensalism C. mutualism D. predation

C. mutualism

What is formed when two or more groups of different organisms live together and interact with each other in the same area? A. community B. population C. niche D. ecosystem

A. community

A green algae provides a fungus with nutrients and water. The fungus protects the alga from the sun and high temperatures. What relationship is illustrated in the given example? A. parasitism B. commensalism C. mutualism D. predation

C. mutualism

Which is an example of a renewable energy source? A. oil B. natural gas C. solar power D. coal

C. solar power

Which is a source of biomass energy? A. water B. wind C. geysers D. plants

D. plants

Which of the following refers to commensalism? A. Both organisms benefit B. Both organisms are harmed C. One organism benefits and the other is harmed D. One organism benefits and the other is unaffected

D. One organism benefits and the other is unaffected

What ecological structure is formed by a group of individuals of the same species living together in the same area? A. niche B. community C. population D. ecosystem

C. population

All members of a group stem from a common ancestor and are capable of interbreeding. The taxonomy category referred to here is... A. class B. order C. species D. family

C. species

Which of the following is an abiotic factor that may affect the types and numbers of animals that live in an area? A. The range of temperatures experienced in the area B. The types of plants available for food sources C. The number and types of predators in the area D. The number of plants available for food sources

A. The range of temperatures experienced in the area

What do you call animals that feed on both plant and meat? A. herbivores B. carnivores C. omnivores D. insectivores

C. omnivores

After drinking dirty water, a student developed bloody diarrhea and liver problems in a few weeks later. Which of the following is the most likely cause of the disease? A. paramecium B. dinoflagellates C. amoeba D. euglena

C. amoeba

Chemical produced by some bacteria that can kill or weaken other bacteria A. antitoxins B. antibodies C. antibiotics D. antiseptic

C. antibiotics

At what stages in its life cycle is a butterfly most active? A. egg and larva B. larva and adult C. pupa and adult D. adult and egg

B. larva and adult

Insecticides are used to control insect populations so that they do not destroy crops. However, over time, a new insecticide has to be developed as they become less effective in killing the insects. Why? A. Insecticides build up in the soil B. Insecticides are concentrated at the bottom of the food chain C. Surviving insects pass their resistance to insecticides to their offspring D. Surviving insects have learned to include insecticides as a food source

C. Surviving insects pass their resistance to insecticides to their offspring

Not all organisms are harmful. Which of these is done by yeast? A. Encourage disease food B. Cause milk to become cheese C. Cause Yakult to be milky D. Promotes the rising of bread for baking

D. Promotes the rising of bread for baking

Which of the following organisms is used to convert milk to cheese? A. Bacteria B. Protozoa C. Virus D. Algae

A. Bacteria

Why is it not quite possible for viruses to live and multiply in the outer layers of our skin? A. The outer layer of the skin has dead cells only B. The outer layer of the skin has oil which is harmful to viruses C. The outer layer of the skin has a lower temperature unsuitable for viruses D. The outer layer of the skin has salt from perspiration which is harmful to viruses

A. The outer layer of the skin has dead cells only

Young people stand straight. Very old ones usually stoop. Why? A. Sedentary lives of the old B. Habit of stooping developed in the old C. Greater gravitational pull on the old than on the young D. Bones of the old have become weak and soft and their joints become loose

D. Bones of the old have become weak and soft and their joints become loose

Which of the following factors contribute to “greenhouse effect”? A. Destruction of the forests B. Use of carbon dioxide by land plants C. Depletion of minerals in the soil by overfarming D. Use of solar glass panels to capture radiant energy

A. Destruction of the forests

Angiosperms are also known as: A. cone bearing B. seed bearing C. flower bearing D. spore bearing

C. flower bearing

Some animals have the ability to produce a lost body part such as lizard, starfish, and brittle star. This method is known as... A. Regeneration B. Fragmentation C. Budding D. Fission

A. Regeneration

Metamorphosis is the change in structure from a larva to an adult. The following animals follow definite stages in their life cycle EXCEPT A. fly B. frog C. butterfly D. turtle

D. turtle

One of the principal causes of acid rain is... A. Waste and acid from chemical factories being pumped into rivers B. Acid from chemical laboratories evaporating into the air C. Gases from burning coal and oil dissolving in water in the atmosphere C. Gases from air conditioner and refrigerators escaping into the atmosphere

C. Gases from burning coal and oil dissolving in water in the atmosphere

While observing some plants, a student notices some very small plants found attached on rocks. The plants most likely belong to __________________. A. angiosperms B. gymnosperms C. tracheophytes D. bryophytes

D. bryophytes

A certain plant with needle-like leaves and cone-bearing usually grow and reproduce in cold places. What is the classification of this plant? a. angiosperms b. gymnosperms c. bryophytes d. monocots

b. gymnosperms

This is an offshoot of water pollution resulting from an accumulation of phosphates and nitrates from waste materials, detergents, and fertilizers. What is this phenomenon that kills aquatic life? A. Acid rain B. Eutrophication C. Dynamite fishing D. Dyanide fishing

B. Eutrophication

Animals are grouped based on their structural similarities. Identify which pair of animals is closely related A. snake and toad B. whale and shark C. bat and monkey D. salamander and turtle

C. bat and monkey

The following practices promote sustainable development EXCEPT A. Reforestation B. Recycling C. Selective hunting D. Cyanide fishing

D. Cyanide fishing

Ant returning from a new food source marks a trail for other ants to follow. This chemical signal is called... A. Hormones B. Enzymes C. Catalyst D. Pheromones

D. Pheromones

Biological Science Questions Flashcards

(300 cards)