Food Chains and Food Webs: Interactive Learning Quizzes for Year 4 Science

Question 1

What is the main source of energy for living things?

Accepted Answer

Sunlight

Answer

Water

Answer

Oxygen

Answer

Minerals

Question 2

What is the name for a living thing that breaks down dead plants and animals?

Accepted Answer

Decomposer

Answer

Producer

Answer

Consumer

Answer

Predator

Question 3

Which of these animals is a herbivore?

Accepted Answer

Rabbit

Answer

Lion

Answer

Snake

Answer

Fox

Question 4

In a food chain, the energy always flows from

Accepted Answer

Producers to consumers

Answer

Consumers to producers

Answer

Decomposers to producers

Answer

Consumers to decomposers

Question 5

What is a food chain?

Accepted Answer

A sequence of organisms where each one eats the one before it, transferring energy.

Answer

A collection of organisms that share the same habitat.

Answer

A group of organisms that consume one another.

Question 6

In a food chain, who is responsible for breaking down dead plants and animals?

Accepted Answer

Decomposers

Answer

Herbivores

Answer

Carnivores

Answer

Producers

Question 7

Which of these is a primary consumer in a food chain?

Accepted Answer

Rabbit

Answer

Grass

Answer

Fox

Answer

Hawk

Question 8

Most food chains start with what as the source of energy?

Accepted Answer

Sunlight

Answer

Animals that make their own food

Answer

Water

Answer

Air

Question 9

What do we call an animal that eats both plants and meat?

Accepted Answer

Omnivore

Answer

Herbivore

Answer

Carnivore

Answer

Predator

Question 10

How do decomposers help the environment?

Accepted Answer

They recycle nutrients back into the soil

Answer

They make new plants grow

Answer

They help animals breathe

Answer

They clean the air

Question 11

In a food web, how does energy move through the different organisms?

Accepted Answer

In many directions between all the organisms

Answer

Only from producers to top consumers

Answer

Only from top consumers to producers

Answer

Energy doesn't move through a food web

Question 12

Why does having a variety of different species in a food chain make it more stable?

Accepted Answer

It means there are more backup food options if one food source becomes scarce.

Answer

It means there is less competition between different species for food.

Answer

It means there are more predators to keep the population of each species in check.

Question 13

Which living thing makes its own food from sunlight?

Accepted Answer

Grass

Answer

Rabbit

Answer

Fox

Answer

Mushroom

Question 14

What do animals that eat other animals do in a food chain?

Accepted Answer

Eat plants or other animals

Answer

Make food from the sun

Answer

Break down dead organisms

Answer

Recycle oxygen

Question 15

What do food chains show us?

Accepted Answer

How energy flows through living things

Answer

How animals compete for food

Answer

How animals adapt to their environment

Answer

How ecosystems change over time

Question 16

What happens to the energy in a food chain as it moves from one living thing to the next?

Accepted Answer

It decreases

Answer

It increases

Answer

It stays the same

Answer

It disappears

Question 17

What do we call living things that make their own food from sunlight?

Accepted Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 18

What is the job of a consumer in a food chain?

Accepted Answer

To eat other organisms

Answer

To make food for other organisms

Answer

To break down dead organisms

Question 19

How does energy move through a food chain?

Accepted Answer

From producers to consumers to decomposers

Answer

From producers to consumers only

Answer

From consumers to producers only

Answer

From decomposers to consumers to producers

Question 20

What do decomposers do in a food web?

Accepted Answer

Break down dead things

Answer

Make food for other organisms

Answer

Eat other organisms

Question 21

Which of these shows a correct food chain?

Accepted Answer

Grass → Rabbit → Fox → Hawk

Answer

Grass → Fox → Rabbit → Hawk

Answer

Hawk → Fox → Rabbit → Grass

Answer

Rabbit → Grass → Fox → Hawk

Question 22

What is the difference between a food chain and a food web?

Accepted Answer

A food chain is a straight line, while a food web is like a tangled ball of string.

Answer

A food chain is like a tangled ball of string, while a food web is a straight line.

Answer

A food chain only shows producers, while a food web shows all living things.

Answer

A food chain is a type of food web.

Question 23

Which of the following living things can make its own food?

Accepted Answer

Grass

Answer

Lion

Answer

Fungus

Answer

Bacteria

Question 24

What do animals like lions and tigers do to get their food?

Accepted Answer

They eat other animals

Answer

They make their own food

Answer

They eat plants

Answer

They don't need to eat

Question 25

Which of these is NOT a type of food chain?

Accepted Answer

Food chain where animals eat only meat

Answer

Food chain where animals eat grass

Answer

Food chain where animals eat animals

Answer

Food chain where animals eat plants and animals

Question 26

What is the name for the many food chains that are connected in a habitat?

Accepted Answer

Food web

Answer

Food network

Answer

Food circle

Answer

Food system

Question 27

What do mushroom and bacteria do in a food chain?

Accepted Answer

They break down dead plants and animals

Answer

They create new plants and animals

Answer

They eat other living things

Answer

They don't do anything

Question 28

What would happen if all the plants in a food chain disappeared?

Accepted Answer

The animals that eat plants would starve

Answer

The animals that eat animals would have more food

Answer

The food chain would become more balanced

Answer

Nothing would happen

Question 29

What happens to the energy that is not used up by living things?

Accepted Answer

It turns into heat and goes into the air.

Answer

It stays in their bodies.

Answer

It makes new living things.

Answer

It disappears.

Question 30

What do decomposers do in a food web?

Accepted Answer

Eat dead things and turn them into soil.

Answer

Make food for other living things.

Answer

Give homes to other living things.

Answer

Control how many of each kind of living thing there are.

Question 31

What would happen if everything that makes its own food was taken away from an ecosystem?

Accepted Answer

Everything else would eventually die.

Answer

Everything else would be fine.

Answer

Only the decomposers would survive.

Answer

Only the top predators would survive.

Question 32

Which of the following is NOT a benefit of studying food chains and food webs?

Accepted Answer

Understanding animal behavior

Answer

Predicting changes in animal populations

Answer

Managing ecosystems for conservation

Answer

Tracing the flow of energy through ecosystems

Question 33

In a food chain, when energy passes from one living thing to another, what happens to the amount of energy available?

Accepted Answer

It decreases.

Answer

It increases.

Answer

It remains the same.

Question 34

How can changes in a food chain impact other parts of an ecosystem?

Accepted Answer

Changes in one food chain can disrupt the flow of energy and nutrients, affecting other parts of the ecosystem.

Answer

Food chains are separate, so changes in one won't affect others.

Answer

Changes only affect the organisms directly involved in that food chain.

Answer

Changes in one food chain always create opportunities for new organisms to thrive.

Question 35

Which of these shows two living things helping each other?

Accepted Answer

A bee collecting pollen from a flower

Answer

A lion eating a zebra

Answer

A crocodile eating a fish

Answer

A wasp laying eggs inside a caterpillar

Question 36

Imagine you visit a forest with tall trees and many animals. If many of the trees were cut down, how would that affect the food chains and food webs in the forest?

Accepted Answer

The food chains and food webs would be disrupted because many animals rely on the trees for food and shelter.

Answer

The animals would have more food because there would be more sunlight reaching the forest floor.

Answer

The food chains and food webs would become more complex as new species move into the area.

Question 37

Which organism in a food chain makes its own energy from sunlight?

Accepted Answer

Plant

Answer

Fox

Answer

Snake

Answer

Owl

Question 38

Which organism in a food chain eats primary consumers?

Accepted Answer

Snake

Answer

Tree

Answer

Mouse

Answer

Grass

Question 39

What is the job of decomposers in a food chain?

Accepted Answer

To break down dead organisms and return nutrients to the soil

Answer

To provide shelter for other organisms

Answer

To eat primary consumers

Answer

To produce energy for plants

Question 40

Which of the following is not part of a food web?

Accepted Answer

Rocks

Answer

Plants

Answer

Animals

Answer

Fungi

Question 41

What is the main difference between a food chain and a food web?

Accepted Answer

A food web shows the many different feeding relationships in an ecosystem, while a food chain follows just one path of energy transfer.

Answer

A food chain is linear and a food web is circular.

Answer

A food chain is smaller than a food web.

Question 42

Which organism is typically at the top of a food web?

Accepted Answer

Apex predator

Answer

Primary consumer

Answer

Producer

Answer

Secondary consumer

Question 43

What might happen if a particular organism in a food web disappears?

Accepted Answer

It could upset the balance of the ecosystem, affecting other organisms that depend on it.

Answer

It will have no effect on the ecosystem.

Answer

It will only affect the populations of organisms that are directly connected to it.

Answer

It will always lead to an increase in the population of other organisms.

Question 44

Which of the following is an example of a symbiotic relationship in a food web?

Accepted Answer

A bee pollinating a flower

Answer

A mushroom decomposing a tree trunk

Answer

A lion hunting a zebra

Answer

A hawk eating a mouse

Question 45

Why are food chains and food webs important in ecosystems?

Accepted Answer

They show how energy flows through living things and how organisms depend on one another.

Answer

They are only important for scientists.

Answer

They only show how animals interact with each other.