Biology Final Test

Question 1

What is the difference between biotic and abiotic factors?

Answer 1

An abiotic factors is a non living factor such as rock where as a biotic factor is a living factor such as animals and plants

Question 2

How do biotic and abiotic factors contribute to the ecosystems?

Answer 2

They depend on each other t keep a healthy ecosystem

Question 3

What are the 3 spheres?

Answer 3

Lithosphere, Hydrosphere, and Atmosphere

Question 4

What is the difference between the 3 spheres?

Answer 4

Lithosphere is anything rock or solid. Hydrosphere is anything underwater. Atmosphere is anything in the air.

Question 5

How does each of the 3 spheres contribute to the functionality of the ecosystem?

Answer 5

Lithosphere - Foundations for land, creates area for necessary growth (food)
Hydrosphere - Living habitat for marine life, food for plants
Atmosphere - Oxygen to breathe, moisture for rain, nitrogen fro plants, gases separating earth from space, regulates climate

Question 6

What is a food web?

Answer 6

A food web is a list of how the superiority of animals, insects, and plants in an ecosystems exist relating multiple animals to one producer.

Question 7

What is a food chain?

Answer 7

A simple representation of which animals, insects, and plants live with others.

Question 8

What is a herbivore?

Answer 8

A creature that only eats plants

Question 9

What is a omnivore?

Answer 9

A creature that eats both meats and plants

Question 10

What is a carnivore?

Answer 10

A creature that eats only meats

Question 11

What is a scavenger?

Answer 11

An organism that mostly consumes decaying biomass, such as meat or rotting plant material.

Question 12

What is a decomposer?

Answer 12

An organism that breaks down the waste in an ecosystem to gain nutrients and recycle nutrients for the rest of the ecosystem eg. Microorganism (bacteria)

Question 13

What is a producer?

Answer 13

An organism that meets its energy needs by making its own food eg. Algae

Question 14

What is a consumer?

Answer 14

An organism that relies on plants for its energy

Question 15

What is a population?

Answer 15

A group of animals/people in a specific area

Question 16

What is a niche?

Answer 16

The role or function of a given organism within its ecosystem.

Question 17

What is a habitat?

Answer 17

The shelter/home of where animals live

Question 18

What is an ecosystem?

Answer 18

a community of interacting organisms and their non-living environment

Question 19

What is a predator?

Answer 19

An animal at the top of a food web, with few, or no natural enemies

Question 20

What is a prey?

Answer 20

An animal that is hunted and killed by another for food.

Question 21

What is a trophic level?

Answer 21

The position that an organism occupies in a food chain.

Question 22

What is carrying capacity?

Answer 22

the maximum number of organisms that an environment can support due to limited resources

Question 23

How does energy get passed on through a food chain?

Answer 23

through consumption 10% of the energy consumed gets passed on

Question 24

What is the carbon cycle?

Answer 24

Carbon enters the biotic components of an ecosystem through photosynthesis. Plants use CO2 to form carbohydrates/ glucose. Cellular respiration in consumers releases carbon into the environment

Question 25

What are the steps for the nitrogen cycle?

Answer 25

1) Nitrogen fixation 2) Nitrification 3) Assimilation 4) Ammonification 5) Dentrification

Question 26

Who benefits from the nitrogen cycle?

Answer 26

Plants, Animals, and Humans

Question 27

Who benefits from the carbon cycle?

Answer 27

All life on earth

Question 28

Do you understand how to read carbon and nitrogen cycle diagrams to understand how the cycles work?

Answer 28

Yes or No

Question 29

What is cellular respiration?

Answer 29

the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Question 30

What is photosynthesis?

Answer 30

a process where plants use sunlight, water, and carbon dioxide to create food (sugars) and release oxygen

Question 31

What substances are needed for cellular respiration?

Answer 31

Glucose and Oxygen

Question 32

What substances are needed for photosynthesis?

Answer 32

Carbon dioxide and Water

Question 33

What substances are made by photosynthesis?

Answer 33

Glucose and Oxygen

Question 34

What substances are made from cellular respiration?

Answer 34

Carbon dioxide and Water

Question 35

Why are cellular respiration and photosynthesis important? (relating your answer to the cycling of matter and the flow of energy)

Answer 35

CR - To help grow our muscles and fuel our bodies each day P - To help plants and animals live and take in carbon dioxide

Question 36

What are limiting factors in an ecosystem? (use the rabbit population as an example)

Answer 36

Space, Weather, and Available resources

Question 37

Why is the pyramid shape ideal when showing the flow of energy in a food chain?

Answer 37

The pyramid shape helps you see the superior levels in a food chain

Question 38

Why are producers at the bottom of the food chain?

Answer 38

Producers are at the bottom because they have one purpose which is to help the consumers live

Question 39

Why do numbers (representing energy in the food chain) change from 100 - 10 - 1 - 0.1 etc.. as you move up the pyramid

Answer 39

The 10% rule

Question 40

What role do decomposers play in an ecosystem?

Answer 40

They clean up dead/wasteful organisms and revert them back to useful organisms such as ammonia

Question 41

Where do the processes of photosynthesis and cellular respiration fit into the process of food chains?

Answer 41

Photosynthesis allows the producer in a food chain to feed the primary consumer, who most likely will use the substances emitted from the photosynthesis to breathe and grow their muscles/bodies.