Food Chains and Food Webs: Interactive Learning Quizzes for Fourth Grade Science

Question 1

In a food chain, which of these shows the correct flow of energy?

Accepted Answer

Plant --> Rabbit --> Fox --> Owl

Answer

Owl --> Fox --> Rabbit --> Plant

Answer

Fox --> Owl --> Rabbit --> Plant

Answer

Rabbit --> Plant --> Fox --> Owl

Question 2

In a food web, what is an animal or plant that eats both plants and other animals called?

Accepted Answer

Secondary consumer

Answer

Producer

Answer

Primary consumer

Answer

Tertiary consumer

Question 3

What do decomposers do in a food chain or food web?

Accepted Answer

Break down dead plants and animals

Answer

Make food for producers

Answer

Keep animals and plants safe from harm

Answer

Control the heat in the ecosystem

Question 4

Which of these things in a food chain or food web is a living thing?

Accepted Answer

Rabbit

Answer

Sunlight

Answer

Temperature

Answer

Water

Question 5

In a food chain, which animal eats rabbits?

Accepted Answer

Hawk

Answer

Grass

Answer

Rabbit

Answer

Mouse

Question 6

Which of these is a living thing that breaks down dead plants and animals?

Accepted Answer

Bacteria

Answer

Fox

Answer

Plant

Answer

Grasshopper

Question 7

What is the first source of energy for all food chains and food webs on Earth?

Accepted Answer

Sun

Answer

Plants

Answer

Animals

Answer

Decomposers

Question 8

Which of these animals eats only plants?

Accepted Answer

Grasshopper

Answer

Hawk

Answer

Snake

Answer

Fox

Question 9

What is the process called when decomposers break down dead organisms?

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Excretion

Question 10

What is the role of decomposers in food chains?

Accepted Answer

Break down dead things

Answer

Create new living things

Answer

Eat other animals

Question 11

What is NOT an essential feature of a food chain?

Accepted Answer

It includes all organisms and their relationships in an ecosystem.

Answer

It shows how energy flows through an ecosystem.

Answer

It involves only producers, consumers, and decomposers.

Answer

It starts with a producer and ends with a decomposer.

Question 12

In a food chain, what type of living thing is a bunny?

Accepted Answer

Primary consumer

Answer

Producer

Answer

Secondary consumer

Answer

Tertiary consumer

Question 13

Which of these examples shows a decomposer?

Accepted Answer

Mushroom

Answer

Grass

Answer

Deer

Answer

Hawk

Question 14

What do producers do in a food web?

Accepted Answer

Make their own food from sunlight.

Answer

Consume other organisms.

Answer

Break down organic matter.

Answer

Transport energy to higher trophic levels.

Question 15

Which of the following shows food web features?

Accepted Answer

Grass -> Deer -> Hawk -> Eagle

Answer

Grass -> Deer -> Hawk

Answer

Grass -> Deer

Answer

Grass -> Deer -> Mushrooms

Question 16

What happens to the energy as it moves through a food web?

Accepted Answer

It is lost at each trophic level.

Answer

It is created by producers.

Answer

It is recycled back into the ecosystem.

Answer

It is stored in the bodies of organisms.

Question 17

What is a niche in a food web?

Accepted Answer

The specific role an organism plays within its ecosystem.

Answer

The physical location where an organism lives.

Answer

The type of food an organism eats.

Answer

The number of organisms of a species in an ecosystem.

Question 18

How do food chains and food webs differ? Food chains show a single path of energy transfer, while food webs show multiple interconnected paths.

Accepted Answer

Food chains show a single path of energy transfer, while food webs show multiple interconnected paths.

Answer

Food webs are made up of only producers and consumers, while food chains include decomposers.

Answer

Food chains are more complex than food webs and can include a greater number of organisms.

Answer

Food chains and food webs are unrelated concepts that do not involve the flow of energy.

Question 19

In a food chain, energy flows from the organisms that are eaten to the organisms that do the eating. Which of these correctly shows the flow of energy?

Accepted Answer

Producer -> consumer

Answer

Consumer -> decomposer

Answer

Decomposer -> producer

Answer

Top predator -> producer

Question 20

Which of these organisms is NOT a decomposer?

Accepted Answer

Grass

Answer

Mushrooms

Answer

Bacteria

Answer

Worms

Question 21

In a food web, which type of organism usually has the highest amount of energy?

Accepted Answer

Top predators

Answer

Producers

Answer

Primary consumers

Answer

Secondary consumers

Question 22

What is the main role of consumers in a food chain or food web?

Accepted Answer

To eat other organisms

Answer

To make their own food

Answer

To break down dead organisms

Question 23

How is a food web different from a food chain?

Accepted Answer

It shows how energy flows through multiple food chains

Answer

It includes producers but not consumers

Answer

It shows how organisms compete for resources

Answer

It is only found in water ecosystems

Question 24

Which part of a plant makes its food using sunlight?

Accepted Answer

Leaves

Answer

Roots

Answer

Stem

Answer

Flowers

Question 25

What is the process by which plants use sunlight to make food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Germination

Question 26

Which of the following is NOT a product of photosynthesis?

Accepted Answer

Carbon dioxide

Answer

Glucose

Answer

Oxygen

Answer

Water

Question 27

Which of the following organisms carries out photosynthesis?

Accepted Answer

Plants

Answer

Animals

Answer

Fungi

Answer

Bacteria

Question 28

What is the name of the green pigment found in plants that is essential for photosynthesis?

Accepted Answer

Chlorophyll

Answer

Hemoglobin

Answer

Melanin

Answer

Carotene

Question 29

In a food web, what do the arrows represent?

Accepted Answer

The way energy moves from one living thing to another

Answer

The size of the different organisms

Answer

How many of each kind of organism there are

Answer

How fast energy is transferred

Question 30

Which of these is NOT a decomposer in a food chain?

Accepted Answer

Hawks

Answer

Bacteria

Answer

Mushrooms

Answer

Earthworms

Question 31

Where does the energy in most food chains originally come from?

Accepted Answer

The sun

Answer

Plants

Answer

Animals

Answer

Decomposers

Question 32

What do bacteria do in a food chain?

Accepted Answer

Break down dead plants and animals and put the nutrients back in the soil

Answer

Make food for other living things

Answer

Control the number of predators

Answer

Help plants make flowers

Question 33

Which of these is an example of two living things helping each other in a food chain?

Accepted Answer

Flowers and bees

Answer

Lions and zebras

Answer

Hawks and owls

Answer

Grasshoppers and rabbits

Question 34

How is a food chain different from a food web?

Accepted Answer

A food chain is a straight line, while a food web is like a branched tree.

Answer

A food chain shows one organism, while a food web shows many.

Answer

A food chain shows how energy moves through different levels, while a food web does not.

Answer

A food web is a kind of food chain.

Question 35

In a food chain, which organism makes its own food from sunlight?

Accepted Answer

Dandelion

Answer

Grasshopper

Answer

Owl

Answer

Mushroom

Question 36

In a food chain, what type of organism eats plants?

Accepted Answer

Primary consumer

Answer

Secondary consumer

Answer

Tertiary consumer

Answer

Decomposer

Question 37

What do decomposers do in a food web?

Accepted Answer

Break down dead organisms

Answer

Make food from sunlight

Answer

Eat plants

Answer

Regulate the population of other organisms

Question 38

Where does all the energy in a food web originally come from?

Accepted Answer

Sunlight

Answer

Wind

Answer

Water

Answer

Minerals

Question 39

What is the role of consumers in a food web?

Accepted Answer

To eat producers and other consumers

Answer

To decompose dead organisms

Answer

To provide energy for producers

Answer

To regulate the population of other organisms

Question 40

Which type of relationship is it when two organisms work together to benefit each other?

Accepted Answer

Mutualism

Answer

Predation

Answer

Competition

Answer

Parasitism

Question 41

In a food web, what is the role of an organism that eats other organisms?

Accepted Answer

Consumer

Answer

Producer

Answer

Decomposer

Answer

Predator

Question 42

What can happen when a food chain is interrupted?

Accepted Answer

The entire ecosystem can be affected

Answer

Only the organisms directly involved are affected

Answer

Nothing happens

Answer

The food chain will automatically balance itself

Question 43

Why are decomposers essential in food chains and food webs?

Accepted Answer

They break down dead organisms and return nutrients to the soil

Answer

They produce food for other organisms

Answer

They control the population of other organisms

Answer

They absorb energy from the sun

Question 44

Which of these organisms is a producer in a food chain?

Accepted Answer

Grass

Answer

Rabbit

Answer

Fox

Answer

Decomposer

Question 45

In a food web, which arrow represents the flow of energy?

Accepted Answer

→

Answer

←

Answer

↑

Answer

↓

Question 46

Where does the energy that is not used by an organism go?

Accepted Answer

It is released into the environment as heat.

Answer

It is stored in the organism's body.

Answer

It is passed on to the next organism in the food chain.

Answer

It is converted into waste.

Question 47

Which of the following is a decomposer?

Accepted Answer

Bacteria

Answer

Grass

Answer

Rabbit

Answer

Fox

Question 48

What is the name for all the connected food chains in an ecosystem?

Accepted Answer

Food web

Answer

Food pyramid

Answer

Food chain

Answer

Energy cycle

Question 49

Which living thing makes its own food from sunlight?

Accepted Answer

Grass

Answer

Rabbit

Answer

Hawk

Answer

Snake

Question 50

What breaks down dead plants and animals into smaller parts?

Accepted Answer

Mushroom

Answer

Owl

Answer

Grass

Answer

Deer

Question 51

Where does the energy for a food chain start?

Accepted Answer

Sun

Answer

Air

Answer

Water

Answer

Soil

Question 52

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

Accepted Answer

A food web shows how many different food chains are connected.

Answer

A food chain shows how many different food webs are connected.

Answer

A food chain is a straight line, while a food web is a circle.

Question 53

Which of these can harm a food chain?

Accepted Answer

Pollution

Answer

Conserving water

Answer

Planting trees

Question 54

What is the main job of decomposers?

Accepted Answer

To break down dead things and put nutrients back in the soil.

Answer

To eat other animals.

Answer

To make food for animals.