Ecosystems: Dive into the World of Living Things for Second Graders

Question 1

How do plants and animals help each other in an ecosystem?

Accepted Answer

Plants make oxygen that animals need, and animals help spread plant seeds.

Answer

Animals make food for plants, and plants provide shelter for animals.

Answer

Plants and animals compete for the same food.

Answer

None of these

Question 2

Which of these animals eats other animals?

Accepted Answer

Lion

Answer

Rabbit

Answer

Deer

Answer

Squirrel

Question 3

Which of these is the biggest ecosystem in the world?

Accepted Answer

Ocean

Answer

Forest

Answer

Desert

Answer

Grassland

Question 4

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead plants and animals

Answer

Make food for plants

Answer

Protect plants from animals

Answer

Control the number of animals

Question 5

Which of these is a living thing found in an ecosystem?

Accepted Answer

A tree

Answer

Sunlight

Answer

Water

Question 6

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead plants and animals

Answer

Make food for other living things

Answer

Provide shelter for animals

Answer

Take in sunlight

Question 7

Which of these shows a food chain?

Accepted Answer

Grass → Rabbit → Fox

Answer

Sun → Grass → Rabbit

Answer

Water → Fish → Bear

Answer

Soil → Plants → Animals

Question 8

What do we call a very large area with a specific climate and types of living things?

Accepted Answer

Biome

Answer

Habitat

Answer

Ecosystem

Answer

Community

Question 9

Which of these activities can damage ecosystems?

Accepted Answer

Littering

Answer

Planting trees

Answer

Recycling paper

Answer

Saving water

Question 10

What is the difference between a producer and a consumer?

Accepted Answer

Producers make their own food, while consumers eat other living things

Answer

Consumers make their own food, while producers eat other living things

Answer

Producers eat other living things, while consumers make their own food

Answer

They are both the same thing

Question 11

Which of these is an example of living things helping each other?

Accepted Answer

A bee helping a flower make seeds

Answer

A lion chasing a zebra

Answer

A bird building a nest in a tree

Answer

A snake eating a mouse

Question 12

What is the name of the process where plants use sunlight to make their own food?

Accepted Answer

Photosynthesis

Answer

Breathing

Answer

Digesting

Answer

Pooping

Question 13

Which of these resources can be replaced naturally?

Accepted Answer

Water

Answer

Coal

Answer

Gold

Answer

Iron

Question 14

What is an ecosystem?

Accepted Answer

A group of plants and animals that live together in the same place.

Answer

A group of animals that live together.

Answer

A forest.

Answer

A type of plant.

Question 15

Which of these is NOT part of an ecosystem?

Accepted Answer

Buildings

Answer

Plants

Answer

Animals

Answer

Water

Question 16

What do producers do in an ecosystem?

Accepted Answer

Make food for themselves and other organisms.

Answer

Break down dead plants and animals.

Answer

Provide shelter for other organisms.

Answer

Eat other organisms.

Question 17

What happens when the number of animals in one group in an ecosystem grows quickly?

Accepted Answer

The number of animals in other groups in the ecosystem will go down.

Answer

The number of animals in other groups in the ecosystem will go up.

Answer

Nothing will happen.

Answer

The whole ecosystem will fall apart.

Question 18

What is the main difference between a biome and an ecosystem?

Accepted Answer

Biomes are larger than ecosystems.

Answer

Ecosystems are more diverse than biomes.

Answer

Biomes have a wider range of temperatures.

Answer

Ecosystems have a wider range of precipitation.

Question 19

What is the word for the variety of life in an ecosystem?

Accepted Answer

Biodiversity

Answer

Sustainability

Answer

Resilience

Answer

Productivity

Question 20

All the living things that live in an ecosystem together are known as the:

Accepted Answer

Community

Answer

Population

Answer

Habitat

Answer

Ecosystem

Question 21

Which of the choices below is NOT a type of ecosystem?

Accepted Answer

Library

Answer

Forest

Answer

Ocean

Answer

Grassland

Question 22

How do plants and animals depend on each other within an ecosystem?

Accepted Answer

Plants provide food for animals, while animals help disperse plant seeds.

Answer

Animals hunt and eat plants for food.

Answer

They live independently of each other.

Answer

Plants provide shade for animals, while animals provide water for plants.

Question 23

What is the job of decomposers in an ecosystem?

Accepted Answer

They break down dead plants and animals.

Answer

They absorb sunlight for other organisms.

Answer

They hunt and eat other organisms.

Answer

They regulate the temperature of the ecosystem.

Question 24

Which of the following is a renewable resource?

Accepted Answer

Wind energy

Answer

Coal

Answer

Natural gas

Answer

Oil

Question 25

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

Accepted Answer

A food chain shows one path of feeding relationships, while a food web shows many interconnected paths.

Answer

A food chain only includes animals, while a food web includes both animals and plants.

Answer

A food chain is a cycle, while a food web is not.

Answer

There is no difference between a food chain and a food web.

Question 26

Which is not a type of ecosystem?

Accepted Answer

Mountain

Answer

Forest

Answer

Desert

Answer

Farm

Question 27

What do producers do in an ecosystem?

Accepted Answer

Make their own food

Answer

Eat other living things

Answer

Break down dead plants and animals

Answer

Control the temperature

Question 28

What is it called when living things break down waste and put nutrients back into the ecosystem?

Accepted Answer

Decomposing

Answer

Photosynthesizing

Answer

Breathing

Answer

Evaporating

Question 29

Which is an example of a man-made ecosystem?

Accepted Answer

Farm

Answer

Forest

Answer

Desert

Answer

Ocean

Question 30

What is the main source of energy for most ecosystems?

Accepted Answer

The sun

Answer

The moon

Answer

The wind

Answer

The water

Question 31

What is the name for a group of the same type of living things that live in the same area at the same time?

Accepted Answer

Population

Answer

Community

Answer

Ecosystem

Answer

Habitat

Question 32

Which of these is NOT an example of an ecosystem?

Accepted Answer

A classroom full of students

Answer

A forest

Answer

A desert

Answer

An ocean

Question 33

What is the main role of producers in an ecosystem?

Accepted Answer

They make food for themselves and other living things

Answer

They break down dead plants and animals

Answer

They hunt and eat other animals

Answer

They provide shelter for other living things

Question 34

Which of these is an example of an interaction between living things in an ecosystem?

Accepted Answer

A bird eating a worm

Answer

A tree absorbing sunlight

Answer

A rock falling into a lake

Answer

The wind blowing through the leaves

Question 35

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

Accepted Answer

A food chain shows only one path of energy transfer, while a food web shows multiple paths.

Answer

A food web shows only one path of energy transfer, while a food chain shows multiple paths.

Answer

There is no difference between a food chain and a food web.

Answer

A food chain shows only producers, while a food web shows both producers and consumers.

Question 36

Which of these animals is a top predator in an ecosystem?

Accepted Answer

Hawk

Answer

Mouse

Answer

Snake

Answer

Rabbit

Question 37

What is the process by which plants make their own food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Digestion

Answer

Excretion

Question 38

What is the term used to describe the area where two ecosystems meet?

Accepted Answer

Ecotone

Answer

Habitat

Answer

Niche

Answer

Population

Question 39

How can we help ecosystems stay healthy?

Accepted Answer

Plant trees and reduce pollution.

Answer

Cut down trees and build more factories.

Answer

Ignore ecosystems and only care about human needs.

Answer

Build houses in forests and grasslands.

Question 40

What helps break down dead things and put nutrients back into the soil?

Accepted Answer

Decomposers

Answer

Producers

Answer

Consumers

Answer

Pollinators

Question 41

Which of the following is not considered an ecosystem type?

Accepted Answer

Neighborhood

Answer

Forest

Answer

Tundra

Answer

Grassland

Question 42

What is the role of decomposers in an ecosystem?

Accepted Answer

Break down dead plants and animals into simpler substances

Answer

Consume other animals

Answer

Capture energy from the sun

Answer

Provide shelter for animals

Question 43

Which of the following is an example of a parasitic relationship in an ecosystem?

Accepted Answer

A flea feeding on a dog

Answer

Two trees sharing nutrients in a forest

Answer

A bird pollinating a flower

Answer

A clownfish living among anemones

Question 44

What is the primary source of energy that drives most ecosystems?

Accepted Answer

Sunlight

Answer

Fossil fuels

Answer

Water

Answer

Wind

Question 45

What is a food web?

Accepted Answer

A interconnected network of food chains

Answer

A group of organisms that occupy the same habitat

Answer

A chain of producers, consumers, and decomposers

Answer

A single pathway of organisms that eat and are eaten

Question 46

What can be a negative impact of deforestation?

Accepted Answer

Reduced biodiversity

Answer

Enhanced carbon storage

Answer

Increased soil fertility

Answer

Improved water quality

Question 47

Which human activity can harm ecosystems?

Accepted Answer

Pollution

Answer

Renewable energy production

Answer

Wildlife conservation

Answer

Recycling

Question 48

What happens to most of the energy that enters an ecosystem?

Accepted Answer

It is used up and lost as heat

Answer

It is stored in plants and animals

Answer

It is released into the atmosphere as oxygen

Answer

It is converted into fossil fuels