Ecosystems: Where Living Things Interact

Question 1

How are producers and consumers related in an ecosystem?

Accepted Answer

Consumers eat producers.

Answer

Producers eat consumers.

Answer

Producers and consumers are not related.

Answer

Consumers produce food for producers.

Question 2

Which of these shows a food chain?

Accepted Answer

Grass -> Grasshopper -> Bird -> Snake

Answer

Grass <- Grasshopper <- Bird <- Snake

Answer

Grass -> Bird -> Grasshopper -> Snake

Answer

Grass -> Snake -> Bird -> Grasshopper

Question 3

What do decomposers do in an ecosystem?

Accepted Answer

They break down dead plants and animals.

Answer

They make food for other animals.

Answer

They provide homes for other animals.

Answer

They control the temperature of the ecosystem.

Question 4

Which of these is an example of an aquatic ecosystem?

Accepted Answer

Ocean

Answer

Forest

Answer

Grassland

Answer

Desert

Question 5

How do multiple food chains work together to create a food web?

Accepted Answer

They overlap and connect in many different ways.

Answer

They connect in a straight line.

Answer

They form a circle.

Answer

They stay separate and do not interact.

Question 6

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

Accepted Answer

A rainforest

Answer

A desert

Answer

An ocean

Answer

A tundra

Question 7

What do producers do in an ecosystem?

Accepted Answer

Make their own food

Answer

Eat other animals

Answer

Break down organic matter

Answer

Control the flow of water

Question 8

Which of the following is NOT a sign of a healthy ecosystem?

Accepted Answer

Lots of pollution

Answer

Many different living things

Answer

A steady climate

Answer

A flow of energy and nutrients

Question 9

What is a keystone species?

Accepted Answer

A species that has a big impact on its ecosystem, even though there are not many of them

Answer

A species that only lives in one particular ecosystem

Answer

A species that is at the top of the food chain

Answer

A species that is a major food source for other species

Question 10

Which of the following is an example of a relationship where both species benefit?

Accepted Answer

Mutualism

Answer

Predation

Answer

Parasitism

Answer

Competition

Question 11

Where does all the energy that living things on Earth need originally come from?

Accepted Answer

The sun

Answer

The moon

Answer

Fossil fuels

Answer

Wind

Question 12

What's the main difference between an ecosystem and a community of living things?

Accepted Answer

An ecosystem is a community of living things and their surroundings, while a community is just the living things.

Answer

An ecosystem only has living things, while a community has both living and non-living things.

Answer

An ecosystem is smaller than a community and is found within it.

Answer

There's no difference between an ecosystem and a community of living things.

Question 13

Even actions like building houses or growing food can affect ecosystems. How is this possible?

Accepted Answer

These actions can change where animals and plants live.

Answer

These actions only affect large ecosystems, not small ones.

Answer

Human actions never impact ecosystems unless they are done directly to nature.

Question 14

What is the name for a group of the same type of living things in the same area?

Accepted Answer

Population

Answer

Community

Answer

Habitat

Answer

Biome

Question 15

Which of these is an example of a producer organism?

Accepted Answer

Grass

Answer

Rabbit

Answer

Snake

Answer

Eagle

Question 16

Which of the following is a feature of a forest ecosystem?

Accepted Answer

Tall trees

Answer

Lots of water

Answer

Open grasslands

Answer

Few types of animals

Question 17

What is the term for the study of the interactions between living things and their environment?

Accepted Answer

Ecology

Answer

Biology

Answer

Chemistry

Answer

Physics

Question 18

What do plants use to turn sunlight into energy?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Symbiosis

Question 19

In an ecosystem, producers:

Accepted Answer

Create their own food

Answer

Consume other organisms

Answer

Break down organic matter

Answer

Provide shelter for animals

Question 20

Which of the following is a characteristic of a forest ecosystem?

Accepted Answer

Tall trees

Answer

Open grasslands

Answer

Sparse vegetation

Answer

Extreme temperatures

Question 21

Decomposers are important because they:

Accepted Answer

Release nutrients into the environment

Answer

Produce new plants

Answer

Control populations of harmful bacteria

Answer

Provide homes for animals

Question 22

Which human activity can harm ecosystems?

Accepted Answer

Pollution

Answer

Planting trees

Answer

Conserving water

Answer

Reducing waste

Question 23

How do predators affect prey populations?

Accepted Answer

Help control their numbers

Answer

Increase their numbers

Answer

Have no impact on their numbers

Answer

Provide them with food

Question 24

What is a food chain?

Accepted Answer

A sequence of organisms that depend on each other for food

Answer

A network of organisms that interact and exchange nutrients

Answer

A group of organisms that live in the same habitat

Answer

A community of organisms that share similar resources

Question 25

How do food webs differ from food chains?

Accepted Answer

Food webs are more complex and show multiple connections

Answer

Food webs are simpler and focus on specific organisms

Answer

Food webs include only plants and animals

Answer

There is no difference between food webs and food chains

Question 26

Which of these is NOT a natural ecosystem?

Accepted Answer

Playground

Answer

Forest

Answer

Ocean

Answer

Desert

Question 27

Which ecosystem is mostly covered in water?

Accepted Answer

Aquatic

Answer

Forest

Answer

Grassland

Answer

Desert

Question 28

What is the name for the process when plants create their own food using sunlight?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Transpiration

Question 29

Which animal in this food chain eats other animals?

Accepted Answer

Hawk

Answer

Rabbit

Answer

Grass

Answer

Mouse

Question 30

What is the job of decomposers in an ecosystem?

Accepted Answer

To break down living things into smaller parts

Answer

To make oxygen for other living things

Answer

To eat plants and animals

Answer

To filter water

Question 31

Which action can hurt an ecosystem?

Accepted Answer

Using bug spray

Answer

Planting trees

Answer

Recycling

Answer

Conserving water

Question 32

What mainly powers ecosystems on our planet?

Accepted Answer

Sunlight

Answer

Wind

Answer

Water

Answer

Fossil fuels

Question 33

What is the name for the area where two different ecosystems meet?

Accepted Answer

Ecotone

Answer

Biome

Answer

Habitat

Answer

Population

Question 34

What is **not** part of an ecosystem?

Accepted Answer

Buildings

Answer

Animals

Answer

Trees

Answer

Water

Question 35

Which type of ecosystem is known for its heavy rainfall and tall trees?

Accepted Answer

Rainforest

Answer

Desert

Answer

Tundra

Answer

Grassland

Question 36

What is the special job that plants do in an ecosystem?

Accepted Answer

They use sunlight to make their own food.

Answer

They eat other animals for food.

Answer

They break down dead plants and animals.

Answer

They control the temperature of their surroundings.

Question 37

Which of these is a renewable resource?

Accepted Answer

Water

Answer

Oil

Answer

Coal

Answer

Natural gas

Question 38

Which of these is NOT a way that living things adapt to their environment?

Accepted Answer

Learning a new language

Answer

Changing their color or shape to blend in

Answer

Growing a thick fur coat in cold places

Answer

Storing food for winter

Question 39

Which of these is not a type of ecosystem?

Accepted Answer

Room inside a house

Answer

Forest

Answer

Desert

Answer

Ocean

Question 40

What is the term for the living things in an ecosystem?

Accepted Answer

Community

Answer

Habitat

Answer

Population

Answer

Biosphere

Question 41

Which of these organisms makes its own food?

Accepted Answer

Grass

Answer

Lion

Answer

Mushroom

Answer

Eagle

Question 42

What is the main source of energy for living things in an ecosystem?

Accepted Answer

Sunlight

Answer

Water

Answer

Oxygen

Answer

Wind

Question 43

Which of these relationships between organisms is a 'win-win' situation?

Accepted Answer

Mutualism

Answer

Predator-prey

Answer

Competition

Answer

Commensalism

Question 44

What is the term for the surroundings in which an organism lives?

Accepted Answer

Habitat

Answer

Niche

Answer

Ecosystem

Answer

Biome

Question 45

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead plants and animals

Answer

Make food for other organisms

Answer

Provide shelter for other organisms

Answer

Hunt other animals for food

Question 46

What's the key difference between an ecosystem and a habitat?

Accepted Answer

An ecosystem is a community of living things and their surroundings, while a habitat is where an organism lives.

Answer

An ecosystem is always smaller than a habitat.

Answer

A habitat is a community of living organisms, while an ecosystem is where an organism lives.

Answer

There's no difference between an ecosystem and a habitat.

Question 47

In an ecosystem with grass, rabbits, and foxes, how does energy flow?

Accepted Answer

Grass (producer) → Rabbits (consumer) → Foxes (consumer)

Answer

Foxes (consumer) → Rabbits (consumer) → Grass (producer)

Answer

Grass (producer) → Foxes (consumer) → Rabbits (consumer)

Question 48

What is the most important thing humans can do to protect the environment?

Accepted Answer

Protect the places where plants and animals live

Answer

Use as many resources as we want, even if it means using them up for future generations

Answer

Make as much money as possible for ourselves

Answer

Only think about the needs of humans and not about other living things

Question 49

Which of the following is NOT a part of an ecosystem?

Accepted Answer

School

Answer

Plants

Answer

Soil

Answer

Animals

Question 50

Which type of ecosystem is found in areas with a lot of water, like an ocean or a lake?

Accepted Answer

Aquatic ecosystem

Answer

Tundra ecosystem

Answer

Grassland ecosystem

Answer

Forest ecosystem

Question 51

What do producers in an ecosystem do?

Accepted Answer

Make their own food using sunlight and nutrients.

Answer

Compete with other organisms for resources.

Answer

Break down dead organisms.

Question 52

Which food chain is correct?

Accepted Answer

Grass -> Grasshopper -> Snake -> Hawk

Answer

Snake -> Grass -> Grasshopper -> Hawk

Answer

Grass -> Hawk -> Snake -> Grasshopper

Answer

Hawk -> Snake -> Grasshopper -> Grass

Question 53

What is the main source of energy for most ecosystems?

Accepted Answer

Sunlight

Answer

Heat

Answer

Wind

Answer

Water

Question 54

What is the role of decomposers in an ecosystem?

Accepted Answer

Break down dead organisms and recycle nutrients.

Answer

Control the population of harmful bacteria.

Answer

Provide food for other organisms.

Question 55

Which of the following is an example of a relationship where both organisms benefit?

Accepted Answer

Bees pollinating flowers

Answer

A predator eating its prey

Answer

A plant absorbing carbon dioxide from the air

Answer

A parasite living on a host

Question 56

What is the name for the area where two ecosystems meet?

Accepted Answer

Ecotone

Answer

Climax community

Answer

Habitat

Answer

Biome

Question 57

Which human activity can harm ecosystems?

Accepted Answer

Pollution

Answer

Protecting endangered species

Answer

Using renewable energy sources

Answer

Planting trees

Question 58

Why is biodiversity important for an ecosystem?

Accepted Answer

It makes the ecosystem more stable and able to recover from changes.

Answer

It reduces competition between organisms.

Answer

It increases the rate of deforestation.