Quiz about Ecosystems and Food Chains Test

Question 1

What is an ecosystem?

Accepted Answer

All the living and nonliving things in an environment

Answer

Only the living things in an area

Answer

Only the nonliving things in an area

Answer

A group of the same species in an area

Question 2

Which of the following is a biotic factor?

Accepted Answer

Plants

Answer

Water

Answer

Rocks

Answer

Sunlight

Question 3

Which of the following is an abiotic factor?

Accepted Answer

Soil

Answer

Bacteria

Answer

Animals

Answer

Fungi

Question 4

A population consists of

Accepted Answer

A single species in an area at a given time

Answer

All the living things in an area

Answer

All nonliving things in an area

Answer

Different species living together

Question 5

What is a community?

Accepted Answer

All the populations of organisms living together

Answer

A single organism in an environment

Answer

All members of a species in an area

Answer

Only the nonliving things in an environment

Question 6

What is a producer?

Accepted Answer

An organism that makes its own food using sunlight

Answer

An organism that eats plants and animals

Question 7

Which of the following is a producer?

Accepted Answer

A tree

Answer

A wolf

Answer

A mushroom

Answer

A bird

Question 8

What is a consumer?

Accepted Answer

An organism that eats to get energy

Answer

An organism that makes its own food

Answer

An organism that decomposes dead material

Answer

A nonliving factor in an environment

Question 9

A decomposer is an organism that:

Accepted Answer

Breaks down dead plants and animals

Answer

Eats only plants

Answer

Creates its own food using sunlight

Answer

Hunts for food

Question 10

Which of the following is a decomposer?

Accepted Answer

Bacteria

Answer

Grass

Answer

Fish

Answer

Deer

Question 11

An herbivore eats:

Accepted Answer

Only plants

Answer

Only meat

Answer

Both plants and meat

Answer

Dead organisms

Question 12

A carnivore eats:

Accepted Answer

Only meat

Answer

Only plants

Answer

Both plants and meat

Answer

Decomposed material

Question 13

What do omnivores eat?

Accepted Answer

Both plants and meat

Answer

Only plants

Answer

Only meat

Question 14

A food chain shows:

Accepted Answer

The flow of energy from one organism to another

Answer

The movement of water in an ecosystem

Answer

The number of organisms in an area

Answer

The total mass of organisms in a habitat

Question 15

In a food chain, arrows show:

Accepted Answer

The flow of energy

Accepted Answer

The direction of migration

Answer

The size of an organism

Answer

The lifespan of an organism

Question 16

A food chain always starts with a:

Accepted Answer

Producer

Answer

Consumer

Answer

Decomposer

Answer

Herbivore

Question 17

A food web is:

Accepted Answer

A network of linked food chains

Answer

A single sequence of energy flow

Answer

A list of decomposers in an environment

Answer

A structure showing only herbivores

Question 18

Which of the following best describes a food web?

Accepted Answer

It shows multiple overlapping food chains

Answer

It only includes decomposers

Answer

It does not include energy flow

Answer

It only shows the role of herbivores

Question 19

What does an energy pyramid show?

Accepted Answer

The amount of energy available at each level of a food chain

Answer

The number of animals in an ecosystem

Answer

The flow of nutrients in an ecosystem

Answer

The number of producers in a habitat

Question 20

As you move up an energy pyramid, what happens to the amount of energy?

Accepted Answer

It decreases

Answer

It increases

Answer

It stays the same

Answer

It disappears

Question 21

Why do energy levels decrease as you go up the energy pyramid?

Accepted Answer

Some energy is used for life processes and lost as heat

Answer

Consumers eat less food at higher levels

Answer

Producers stop making food

Answer

Organisms move to different environments

Question 22

Which trophic level contains the most energy?

Accepted Answer

Producers

Answer

Top predators

Answer

Primary consumers

Answer

Decomposers

Question 23

What would happen if all producers in an ecosystem disappeared?

Accepted Answer

Herbivores and carnivores would eventually die

Answer

Only decomposers would survive

Answer

Energy flow would increase

Answer

Consumers would make their own food

Question 24

If a rabbit eats grass and a fox eats the rabbit, what is the fox?

Accepted Answer

Secondary consumer

Answer

Producer

Answer

Primary consumer

Answer

Decomposer

Question 25

If a bird eats both seeds and insects, what is it classified as?

Accepted Answer

Omnivore

Answer

Herbivore

Answer

Carnivore

Answer

Decomposer

Question 26

A hawk that eats a snake, which ate a mouse, is a:

Accepted Answer

Tertiary consumer

Answer

Primary consumer

Answer

Secondary consumer

Answer

Producer

Question 27

What would happen if decomposers disappeared?

Accepted Answer

Dead material would pile up

Answer

More plants would grow

Answer

Food chains would not be affected

Answer

Energy flow would continue as normal

Question 28

Why are decomposers important to ecosystems?

Accepted Answer

They break down dead organisms and recycle nutrients

Answer

They create energy for producers

Answer

They help predators hunt

Answer

They consume sunlight

Question 29

A wolf that eats a rabbit is a:

Accepted Answer

Secondary consumer

Answer

Producer

Answer

Primary consumer

Answer

Decomposer

Question 30

What is the main role of the sun in an ecosystem?

Accepted Answer

It provides energy for producers

Answer

It provides heat for animals

Answer

It helps decomposers break down material

Answer

It allows consumers to grow

Question 31

If a deer population increases, what is most likely to happen to the plants they eat?

Accepted Answer

They will decrease

Answer

They will increase

Answer

They will remain the same

Answer

They will become carnivorous

Question 32

A beaver cutting down trees and building a dam is an example of:

Accepted Answer

A biotic factor affecting an abiotic factor

Answer

A decomposer

Answer

An abiotic factor affecting a biotic factor

Answer

An energy transfer

Question 33

If the number of carnivores in an ecosystem decreases, what will likely happen to the number of herbivores?

Accepted Answer

Increase

Answer

Decrease

Answer

Stay the same

Answer

Become omnivores

Question 34

What role do herbivores play in a food chain?

Accepted Answer

They consume plants to obtain energy

Answer

They decompose dead organisms

Answer

They hunt other animals for food

Answer

They produce energy from sunlight

Question 35

Which of the following is an abiotic factor in an ecosystem?

Accepted Answer

Sunlight

Answer

Fungi

Answer

Deer

Answer

Grass

Question 36

What happens to the energy as it moves up the food chain?

Accepted Answer

It decreases

Answer

It remains constant

Answer

It is recycled back to producers

Answer

It increases

Ecosystems and Food Chains Test

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