Ecosystems: Definition and Components for 2nd Graders

Question 1

Which of the following is not a living thing in an ecosystem?

Accepted Answer

Mountains

Answer

Plants

Answer

Animals

Answer

Soil

Question 2

What is a group of living things that share the same area called?

Accepted Answer

Community

Answer

Ecosystem

Answer

Population

Answer

Habitat

Question 3

Which of the following is not a type of ecosystem?

Accepted Answer

Playroom

Answer

Forest

Answer

Ocean

Answer

Desert

Question 4

Which of these animals hunts and eats other animals?

Accepted Answer

Lion

Answer

Rabbit

Answer

Deer

Answer

Bear

Question 5

What is the special process that plants use to make food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Germination

Question 6

Which of these helps to break down dead plants and animals?

Accepted Answer

Mushroom

Answer

Hawk

Answer

Fish

Answer

Tree

Question 7

What is the name for the balance that exists between living things in an ecosystem?

Accepted Answer

Equilibrium

Answer

Sustainability

Answer

Competition

Answer

Symbiosis

Question 8

What do plants need to make their own food?

Accepted Answer

Sunlight, water, and carbon dioxide

Answer

Water, oxygen, and nutrients

Answer

Sunlight, oxygen, and soil

Answer

Carbon dioxide, oxygen, and water

Question 9

Which of the following is an example of a forest ecosystem?

Accepted Answer

A rainforest

Answer

A lake

Answer

A desert

Answer

An ocean

Question 10

How do animals depend on plants?

Accepted Answer

For food, water, and shelter

Answer

For water and oxygen only

Answer

For food only

Answer

For shelter only

Question 11

What is the most important factor that determines the type of ecosystem that exists in a particular area?

Accepted Answer

Climate

Answer

Soil type

Answer

Altitude

Answer

Human activities

Question 12

How can we help protect ecosystems?

Accepted Answer

Reduce pollution, conserve resources, and plant trees

Answer

Only reduce pollution

Answer

Only conserve resources

Answer

Only plant trees

Question 13

What is a biome?

Accepted Answer

A large ecosystem with a similar climate and plants

Answer

A small ecosystem with unique animals

Answer

A human-made ecosystem

Answer

A part of an ecosystem with specific animals

Question 14

Which of the following is NOT a characteristic of a desert ecosystem?

Accepted Answer

Many water sources

Answer

Extreme temperatures

Answer

Low rainfall

Answer

Sparse vegetation

Question 15

Which part of an ecosystem is not alive?

Accepted Answer

Rocks

Answer

Plants

Answer

Animals

Answer

Soil

Question 16

What might happen if a part of an ecosystem is taken away?

Accepted Answer

The ecosystem could become unbalanced

Answer

The ecosystem will always be able to adjust

Answer

Nothing will happen

Answer

The ecosystem will disappear

Question 17

How do plants make their own food?

Accepted Answer

Photosynthesis

Answer

Breathing

Answer

Digestion

Answer

Breaking down

Question 18

Which animal eats only plants?

Accepted Answer

Rabbit

Answer

Lion

Answer

Snake

Answer

Eagle

Question 19

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead things

Answer

Make oxygen

Answer

Eat plant-eaters

Answer

Make new dirt

Question 20

Where does an organism live?

Accepted Answer

Habitat

Answer

Big ecosystem

Answer

Animal group

Answer

Food source

Question 21

Which of these is a producer in an ecosystem?

Accepted Answer

Grass

Answer

Deer

Answer

Hawks

Answer

Mushrooms

Question 22

Where do animals mostly get their energy in an ecosystem?

Accepted Answer

From plants

Answer

From the sun

Answer

From other animals

Answer

From the air

Question 23

What is it called when a group of the same type of living things live in the same place?

Accepted Answer

Population

Answer

Community

Answer

Ecosystem

Answer

Biome

Question 24

Which of these is NOT a living thing in an ecosystem?

Accepted Answer

Sunlight

Answer

Water

Answer

Plants

Answer

Animals

Question 25

What is the process called when plants use sunlight to make their own food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Transpiration

Question 26

Which type of ecosystem has very cold temperatures and lots of cone-shaped trees?

Accepted Answer

Tundra

Answer

Forest

Answer

Grassland

Answer

Desert

Question 27

Which thing is NOT found in an ecosystem?

Accepted Answer

Cars

Answer

Plants

Answer

Animals

Answer

Soil

Question 28

Which of these is a type of forest ecosystem?

Accepted Answer

Rainforest

Answer

Desert

Answer

Ocean

Answer

Grassland

Question 29

Which animal eats both plants and animals?

Accepted Answer

Bear

Answer

Lion

Answer

Rabbit

Answer

Snake

Question 30

What is the name for the way plants use sunlight to make food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Transpiration

Question 31

In an ecosystem, how do living things depend on non-living things?

Accepted Answer

Living things use non-living things for food, shelter, and water.

Answer

Only living things can affect each other.

Answer

Non-living things have no effect on living things.

Answer

Living and non-living things don't interact in ecosystems.

Question 32

What is an ecosystem?

Accepted Answer

All living things in an area and their surroundings

Answer

A type of plant

Answer

A type of animal

Question 33

What is a living thing that makes its own food called?

Accepted Answer

Producer

Answer

Consumer

Answer

Decomposer

Question 34

What is a living thing that eats other living things called?

Accepted Answer

Consumer

Answer

Producer

Answer

Decomposer

Question 35

What is a living thing that decomposes other living things called?

Accepted Answer

Decomposer

Answer

Producer

Answer

Consumer

Question 36

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Question 37

What gas do plants release during photosynthesis?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

Nitrogen

Question 38

What is the process by which animals use oxygen to break down food called?

Accepted Answer

Respiration

Answer

Photosynthesis

Answer

Decomposition

Question 39

What is the process by which dead plants and animals are broken down into nutrients called?

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Question 40

As energy moves from plants to animals to decomposers in an ecosystem, what happens to it?

Accepted Answer

It decreases.

Answer

It increases.

Answer

It remains the same.

Answer

It disappears.

Question 41

Why is it important for an ecosystem to have a variety of plants and animals?

Accepted Answer

It helps the ecosystem remain stable if certain plants or animals disappear.

Answer

It makes the ecosystem more visually appealing.

Answer

It ensures there is enough food for all the animals.

Question 42

What might happen to a forest if too many trees are cut down?

Accepted Answer

There will be less air to breathe for animals and people.

Answer

The soil will be healthier for growing plants.

Answer

Animals will have an easier time finding food.

Question 43

Which of these is NOT found in an ecosystem?

Accepted Answer

A car

Answer

A tree

Answer

A rock

Answer

A bird

Question 44

Forests are an example of which type of ecosystem?

Accepted Answer

Terrestrial

Answer

Aquatic

Answer

Tundra

Question 45

Which of these organisms is a producer in an ecosystem?

Accepted Answer

Grass

Answer

Lion

Answer

Mushroom

Answer

Snake

Question 46

What is the relationship between a lion and a zebra?

Accepted Answer

Predator and prey

Answer

Mutualism

Answer

Parasitism

Answer

Commensalism

Question 47

Why is biodiversity important in an ecosystem?

Accepted Answer

It keeps the ecosystem stable and healthy

Answer

It makes the ecosystem more valuable

Answer

It makes the ecosystem prettier

Answer

It makes the ecosystem more dangerous

Question 48

What is a food chain?

Accepted Answer

A series of organisms that eat each other

Answer

A group of organisms that live together

Answer

A type of ecosystem

Question 49

What is a food web?

Accepted Answer

A network of interconnected food chains

Answer

A type of ecosystem

Answer

A group of organisms that live together

Answer

A type of food

Question 50

What is the job of decomposers in an ecosystem?

Accepted Answer

To break down dead plants and animals

Answer

To provide shelter for other organisms

Answer

To make food

Answer

To eat other organisms

Question 51

How can human activities affect ecosystems?

Accepted Answer

By polluting the air, water, and land

Answer

By making them more profitable

Answer

By making them more dangerous

Answer

By making them prettier