F. Crop Science Flashcards by Lhy Buquiron

A group of plants within a species that are distinguished by the same or similar characteristics.

A. Clone
B. Genes
C. Variety
D. Species

C. Variety

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The physical appearance of a plant with respect to a particular character.

A. Ideotype
B. Phenotype
C. Genotype
D. Prototype

B. Phenotype

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An internal condition of a seed or bud that prevents its prompt germinating or sprouting under normal growth conditions:

A. Dormancy
C. Germination
B. Diffusion
D. Dominan

A. Dormancy

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The process of moisture loss of plants through the leaves:

A. Germination
C. Oxidation
B. Transpiration
D. Flowering

B. Transpiration

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Next to rice and corn, the top 5 crops of the Philippines include:

A. Coconut, banana, abaca
C. Coconut, wheat, sugarcane
B. Coconut, sugarcane, banana
D. Coconut, coffee, cassava

B. Coconut, sugarcane, banana

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Which of these crops can be classified as an agronomic and horticultural crop based on their uses under Philippine condition?

A. Rice
C. Sorghum
B. Okra
D. Mungbean

D. Mungbean

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The technique of moving genes from one organism to another or putting them back in different combinations to produce an improved organism is known as:

A. Recombinant DNA
C. Biotechnology
B. Genetic engineering
D. Cloning

B. Genetic engineering

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Plant propagation can be accomplished through several techniques. It is the implantation of a meristem
from another plant to a plantlet or sterile plant in vitro.

A. Grafting
C. Microlayering
B. Budding
D. Micrografting

D. Micrografting

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It is the process of preparing the soil for planting, thereby providing good physical, chemical and biological conditions that would permit optimum plant growth.

A. Primary tillage
C. Land preparation
B. Secondary tillage
D. Conventional tillage

C. Land preparation

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The chlorophyll is commonly found in:

A. Vascular bundies
C. Mesophyll cells
B. Stomata
D. Mitochondria

C. Mesophyll cells

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Light absorption by the leaf is lowest in:

A. Red
C. Yellow
B. Blue
D. Green

D. Green

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Crossing over of genes on a chromosome occurs as a result of

A. Sexual reproduction
C. Clonal propagation
B. Vegetative propagation
D. Self-pollination of a pure line

A. Sexual reproduction

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The main path of (movement) inorganic substances in plants is:

A. Roots
C. Phloem
B. Xylem
D. Leaves

C. Phloem

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Plants that grow on live trees or dead trunks but not depend on them for water and nutrients.

A. Epiphytes
C. Terrestrial
B. Xerophytes
D. Bryophytes

A. Epiphytes

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The growth response of plants to the direction of light is called:

A. Geotropism
C. Thigmatropism
B. Phototropism
D. Epinastry

B. Phototropism

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This is a group of cells, tissues or plants derived from a single mother cell, tissue of plant through asexual means and is expected to be genetically identical.

A. Clone
C. Meristem
B. Bud
D. Scion

A. Clone

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A type of dormancy wherein the new embryo stops growing while still attached to the parent plant thus, preventing the seed from germinating viviparously even after the ripe seed is shed off or harvested.

A. Innate dormancy
C. Enforced dormancy
B. Induced dormancy
D. Forced dormancy

A. Innate dormancy

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A class of seeds intended for farmers’ use after several tests and selection since they do not segregate anymore.

A. Registered seeds
C. Breeder seeds
B. Certified seeds
D. Foundation seeds

B. Certified seeds

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It is a class of seeds whose genetic identity and purity of the variety are maintained. This type of seed is the source of all certified seed classes, either directly or through registered seed, it is issued with red tag.

A. Registered seeds
C. Breeder seeds
B. Certified seeds
D. Foundation seeds

D. Foundation seeds

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Seeds are classified according to their purity. In rice seeds, a white tag is attached to the bag of this class of seed.

A. Registered seeds
C. Breeder seeds
B. Certified seeds
D. Foundation seeds

C. Breeder seeds

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A flower that bears both reproductive structures, the pistil and stamen, is called

A. Complete
C. Determinate
B. Perfect
D. Essential flower

B. Perfect

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The most common type of cell and tissue in the plant body is

A. Aerenchyma
C. Collenchyma
B. Sclerenchyma
D. Parenchyma

D. Parenchyma

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Photocybernetic effect refers to the effect of sunlight on

A. Plant response to daylength
C. Response to gravity
B. Plant development
D. Photosynthesis

B. Plant development

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The effective wavelength for photoperiodism is

A. Red and blue
C. Ultra violet rays
B. Far red and red
D. Gamma rays

B. Far red and red

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Sciophytes are also known as A. Sun loving plants C. Day neutral plants B. Shade loving plants D. Water loving plants

B. Shade loving plants

Most economically important crops are: A. Xerophytes C. Mesophytes B. Hydrophytes D. Halophytes

C. Mesophytes

A desiccant commonly used in seed storage to prevent further moisture absorption by seeds A. Silica gel C. Freon B. Carnauba wax D. Liquid nitrogen

A. Silica gel

The leafy shoots originating from axillary buds borne at the base of the pineapple fruit are called A. Suckers C. Runners B. Slips D. Crown

B. Slips

Seed germination is affected by light quality as mediated by a phytochrome system. That kind of light that acts as an enzyme which initiates germination is: A. Red light C. Ultra violet light B. Far red light D. Infra-red light

A. Red light

. It is the result of the union of male and female gametes which results in the formation of seeds and the creation of individuals with new genotype. This usually results in the increased vigor or growth of a hybrid progeny in relation to the average of the parent is known as: A. Variety C. Offspring B. Pedigree D. Heterosis

D. Heterosis

The stage in the life cycle of a seed when development is complete and the biological component necessary for all the physiological processes are active or ready to be achieved. A. Seed germination C. Physiological maturity B. Seed emergence D. Biological yield

C. Physiological maturity

The structure in plants located either at the upper, lower or both epidermis of the leaves responsible for exchange of gases is known as: A. Root hair C. Crystal B. Stomata D. Trichom

B. Stomata

Provided with tap root system in which the main root is capable of penetrating down the soil surface to seek water level and this explains why these plants are rather long lived, they are: A. Ferns C. Dicots B. Monocots D. Mosses

C. Dicots

The young plant that develops inside the seed. A. Seed coat C. Endosperm B. Embryo D. Perisperm

B. Embryo

The process of converting water and carbon dioxide into sugar using chlorophyll and light energy accompanied by the production of oxygen by green plants: A. Respiration C. Transpiration B. Oxidation D. Photosynthesis

D. Photosynthesis

It is defined as the spatial and temporal combination of crops in a given area and the management used to produce them. A. Cropping system C. Multiple cropping B. Cropping pattern D. Strip cropping

B. Cropping pattern

It is the growing of two crops in rapid sequence of succession planting one after the harvest of the former. A. Relay cropping C. Intercropping B. Ratoon croping D. Sequential cropping

D. Sequential cropping

A type of plant propagation wherein formation of adventitious roots or buds occurs before separation of the propagule from the parent plant. A. Grafting C. Cloning B. Layering D. Inarching

B. Layering

A system of spacing and arrangement in planting of perennial crops wherein seedlings are sown using square arrangement with an additional plant in the center. A. Square arrangement C. Triangular B. Quincunx D. Terrace system

B. Quincunx

The vegetative organs of the plant body include the roots, stem, and A. Flowers C. Leaves B. Seeds D. Fruits

C. Leaves

The basic unit of plant classification is the: A. Species C. Family B. Order D. Genes

A. Species

Which among the elements is a major element for plant nutrition? A. Boron C. Nitrogen B. Chlorine D. Silicon

C. Nitrogen

The plant organ mainly responsible for the transport of water, minerals and food to the various parts of the plant is the A. Zylem C. Phloem B. Root D. Stem

C. Phloem

In some dicots like legumes and cucurbits, the reserve food of the seed is stored in the A. Endosperm C. Cotyledon B. Perisperm D. Exoderm

C. Cotyledon

This refers to the physiological response of plants to variations in the duration of day light length of days and night. A. Photoperiodism C. Light intensity B. Phototropism D. Light quality

A. Photoperiodism

The study of growing, arranging and marketing of flowers and foliage plants. A. Olericulture C. Selviculture B. Floriculture D. Agriculture

B. Floriculture

Short season crops grown for additional income. A. Cash crops C. Nurse crops B. Cover crops D. Trap crops

A. Cash crops

Combining together a root stock and scion until they unite permanently. A. Marcotting C. Layering B. Grafting D. Cutting

B. Grafting

Legume crops plowed under the soil at flowering stage to increase soil productivity. A. Soiling crops C. Cover crops B. Green manure crops D. Silage crops

B. Green manure crops

A plant that germinates, mature and dies in a span of one year. A. Bienial C. Annual B. Perennial D. Permanent

C. Annual

Air layering is also known as A. Marcotting C. Budding B. Grafting D. Inarching

A. Marcotting

The sequences of events occurring in a viable seed, starting with the inhibition of water, that leads to the growth and development of embryo: A. Reproduction C. Fertilization B. Vegetative stage D. Germination

D. Germination

Plants living more than one year but, in some cases, producing seed in the first year and every season thereafter: A. Annual C. Biennial B. Quarter-annual D. Perennial

D. Perennial

Plants that require short darkness to flower are: A. Long day plants C. Short day plants B. Day neutral plants D. Dry season plants

A. Long day plants

A crop which is planted in shortly before the first crop is to be harvested: A. Relay crop C. Cash crop B. Inter-tilled crop D. Companion cro

A. Relay crop

A crop grown between orchard trees or on field between cropping season to protect the land from leaching and erosion A. Cover crop C. Cash crop B. Inter-tilled crop D. Companion crop

A. Cover crop

A practical adaptation of reforestation whereby the species planted have economic value, such as mango, pili and so on. A. Cropping systems C. Agroforestry B. Strip cropping D. Reforestation

C. Agroforestry

(Crop rotation) planting different crops, one after the other each season: A. Multi cropping or mixed cropping C. Relay cropping B. Graded terrace D. Strip cropping

C. Relay cropping

A method of asexual propagation involving the transfer of aerial parts of one plant (scion) to the root or trunk material (stock) of another plant: A. Hydroponics C. Inoculation B. Grafting D. Marcotting

B. Grafting

D. Germination

A crop produced for direct sale for cash, as contracted with crops produced as livestock feed: A. Cover crop C. Cash crop B. Inter-tilled crop D. Companion crop

C. Cash crop

Replanting of forest trees species in the watershed area: A. Cropping systems C. Agroforestry B. Strip cropping D. Reforestation

D. Reforestation

Plants living more than one year but, in some cases, producing seed in the first year and every season thereafter: A. Annual C. Biennial B. Quarter-annual D. Perennial

D. Perennial

The process of covering the land surface with plant residues, plastic or other materials appropriate to arrest loss of moisture through evaporation: A. Cropping systems C. Mulching B. Contour cultivation D. Strip cropping

C. Mulching

Planting different crops simultaneously in the same field at the same cropping season: A. Multi cropping or mixed cropping C. Relay cropping B. Graded terrace D. Strip cropping

A. Multi cropping or mixed cropping

It is an orderly sequence of planting crop in an area for a 365-day period. A. Cropping pattern C. Crop sequence B. Crop combination D. Cropping schedule

A. Cropping pattern

Is the practice of growing different crops in alternate strips across the slope to serve as barriers for soil erosion. A. Cropping systems C. Mulching B. Contour cultivation D. Strip cropping

D. Strip cropping

It is the art and practice of crop production: A. Farming C. Pathology B. Edaphology D. Fishing

A. Farming

Agronomics crops consist of: A. Cereal crops e.g rice, corn C. Turf grasses e.g. Bermuda B. Fiber crops e.g. maguey, sisal D. A and B only

D. A and B only

Fruit cracking occurs when fluctuation of water supply occurs on this/these plants: A. Tomato C. Sweet pepper B. Eggplant D. A and B only

A. Tomato

A plant that thrives under medium conditions of moisture and salt content of the soil. A. Mesophyte C. Thermophyte B. Sporophyte D. Agrophyte

A. Mesophyte

The number of crops grown per annum on a given area of land. A. Cropping index C. Yield index B. Planting density D. Relative yield

A. Cropping index

Consists of carrying out agricultural operations very nearly on the contour. It reduces the velocity of overland flow and retards soil erosion: A. Cropping systems C. Mulching B. Contour cultivation D. Strip cropping

B. Contour cultivation

Modification of cropping system such as crop rotation and mixed cropping: A. Cropping systems C. Mulching B. Contour cultivation D. Strip cropping

A. Cropping systems

Photophosphorylation is the production of ______ using the energy of light - excited - electrons produced in the light reaction of photosynthesis: A. Adenosine diphosphate (ADP) C. Protein B. Adenosine triphosphate (ATP) D. Vitamins

B. Adenosine triphosphate (ATP)

The phase from flowering to full maturity in the life cycle of the rice plant is: A. Metaphase C. Vegetative phase B. Reproductive phase D. Ripening phase

D. Ripening phase

When the lower leaves are scorched or burned on margins and tips, the plant is suffering a deficiency in: A. Nitrogen C. Potassium B. Iron D. Phosphorus

C. Potassium

Photoperiodism is the response of plant to different ________. A. Amount of light exposure C. Amount of solar radiation B. Day lengths or light periods D. Time of the day

B. Day lengths or light periods

The slight checking of the growth of plants before transplanting to improve their ability to resume growth quickly in the new location is referred to as: A. Off-barring C. Hardening B. Priming D. Mulching

C. Hardening

Plants that grow in dry situation and regularly endures and survive drought is called: A. Xarophytes C. Bryophytes B. Hydrophytes D. Spermatophytes

A. Xarophytes

Plants that thrive well in water or swamps are: A. Xarophytes C. Bryophytes B. Hydrophytes D. Spermatophytes

B. Hydrophytes

When a sickly yellowish green color was found, the plant was possibly suffering from what major element deficiency? A. Nitrogen C. Boron B. Phosphorus D. Potassium

A. Nitrogen

The three most common varieties of bananas in the country are: A. Sabang tagalong, galamay señora, and butuhan C. Lacatan, morado, and bacood B. Lacatan, latundan, and saba D. Butuhan, cavendish, and tampuhin

B. Lacatan, latundan, and saba

This mineral element increases root growth proliferation and hastens ripening of fruits. A. Iron C. Copper B. Phosphorus D. Potassium

B. Phosphorus

The phase from panicle initiation to flowering in the life cycle of rice plant. A. Metaphase C. Vegetative phase B. Reproductive phase D. Ripening phase

B. Reproductive phase

A planting process that uses a slurry of seed and mulch. It is often used as an erosion control technique, and as an alternative to the traditional process of broadcasting or sowing dry seeds. A. Hydroseeding C. Hydrosowing B. Hydroplanting D. Hydrotransplanting

A. Hydroseeding

Glycine max is commonly known as: A. Millet C. Soybean B. Pigeon pea D. Peanut

C. Soybean A. Millet - Pennisetum glaucum B. Pigeon pea - Cajanus cajan D. Peanut - Arachis hypogaea

Momordica charantia is commonly known as: A. White gourd C. Bitter gourd B. Wax gourd D. Ribbed gourd

C. Bitter gourd B. Wax gourd - Benincasa hispida D. Ribbed gourd - Luffa acutangula

Ananas comosus is commonly known as: A. Santol C. Pineapple B. Soursop D. Guyabano

C. Pineapple A. Santol - Sandoricum koetjape B. Soursop - Annona muricata D. Guyabano - Annona muricata

The scientific name of santol is A. Canarium ovatum C. Sandoricum koetjape B. Averrhoa carambola D. Syzygiuum cumini

C. Sandoricum koetjape A. Canarium ovatum - Pili B. Averrhoa carambola - Carambola D. Syzygiuum cumini - Java Plum

The scientific name of tobacco is A. Brassica oleracea C. Nicotiana tartarum B. Nicotiana tabacum D. Gossypium hirsutum

B. Nicotiana tabacum A. Brassica oleracea - Wild cabbage D. Gossypium hirsutum - Cotton

The scientific name of eggplant: A. Lyconpersicon esculantum C. Solanum melongena B. Hibiscus esculantus D. Moringa oleifera

C. Solanum melongena A. Lyconpersicon esculantum - Tomato B. Hibiscus esculantus - Okra D. Moringa oleifera - Moringa / Malunggay

Vigna radiata is commonly known as: A. Mungbean C. Rice bean B. Castor bean D. Peanut

A. Mungbean C. Rice bean - Vigna umbellata B. Castor bean - Ricinus communis D. Peanut - Arachis hypogaea

The Scientific name for onion: A. Raphanus sativus C. Allium sativum B. Daucus carota D. Allium sepa

D. Allium sepa A. Raphanus sativus - Radish C. Allium sativum - Garlic B. Daucus carota - Wild carrot

The scientific name of strawberry: A. Vitis vinifera C. Cocos nucifera B. Sandorium koetjape D. Fragaria vesca

D. Fragaria vesca A. Vitis vinifera - Grapes C. Cocos nucifera - Coconut B. Sandorium koetjape - Santol

The scientific name of lanzones is A. Lansiumdomesticum C. Durio discolor B. Artocarpusaltilis D. Averrhoabilimbi

A. Lansiumdomesticum B. Artocarpusaltilis - Breadfruit / Rimas D. Averrhoabilimbi - Bilimbi / Kamias

The scientific name of mangosteen is A. Garciniamangostana C. Durio discolor B. Artocarpusaltilis D. Averrhoabilimb

A. Garciniamangostana B. Artocarpusaltilis - Breadfruit / Rimas D. Averrhoabilimb - Bilimbi / Kamias

The scientific name of durian is A. Duriozibethinus C. Durio discolor B. Artocarpusaltilis D. Averrhoabilimbi

A. Duriozibethinus B. Artocarpusaltilis - Breadfruit / Rimas D. Averrhoabilimbi - Bilimbi / Kamias

The scientific name of bitter gourd is A. Momordica charantia C. Luffa acutangula B. Citrullus lanatus D. Luffa cylindrical

A. Momordica charantia C. Luffa acutangula - Chinese okra / Ribbed Gourd B. Citrullus lanatus - Watermelon D. Luffa cylindrical - Sponge Gourd / Patola