Ecosystems: Dive into the Interconnected World of Living Things

Question 1

In an ecosystem, living things (biotic components) and non-living things (abiotic components) work together. How do these interactions impact the ecosystem?

Accepted Answer

Living things provide resources like oxygen and nutrients for non-living things, while non-living things like sunlight and water help living things survive and grow.

Answer

Living things have no effect on non-living things, and non-living things have no effect on living things.

Answer

Living things are more important than non-living things in an ecosystem.

Answer

Non-living things are more important than living things in an ecosystem.

Question 2

What is carrying capacity in ecosystems? Explain its importance and provide real-life examples of what happens when carrying capacity is exceeded.

Accepted Answer

Carrying capacity is the maximum number of individuals of a species that an ecosystem can support over time.

Answer

Carrying capacity is the minimum number of individuals of a species needed for a healthy ecosystem.

Answer

Carrying capacity is a measure of an ecosystem's ability to recover from disturbances.

Answer

Carrying capacity is not affected by human activities.

Question 3

Which of these is NOT a type of symbiotic relationship where two organisms live together?

Accepted Answer

Competition

Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Question 4

How can people lessen their impact on ecosystems? Pick the best answer.

Accepted Answer

Reduce, reuse, and recycle to create less trash.

Answer

Use more fossil fuels to make energy.

Answer

Cut down forests to make room for cities.

Answer

Throw trash in rivers and oceans.

Question 5

How can we reduce our impact on the environment by changing our daily habits?

Accepted Answer

Use reusable bags instead of plastic bags.

Accepted Answer

Turn off lights when leaving a room.

Answer

Drive to school instead of walking or biking.

Question 6

What is the best definition of an ecosystem?

Accepted Answer

A community of living things interacting with each other and their environment

Answer

A collection of plants and animals living together

Answer

A place where only humans reside

Answer

A specific habitat like a forest or desert

Question 7

How does biodiversity affect the health of an ecosystem?

Accepted Answer

A. Ecosystems with high biodiversity are more resistant to changes in the environment.

Answer

B. Ecosystems with low biodiversity are more productive.

Answer

C. Biodiversity does not affect the stability of ecosystems.

Answer

D. All ecosystems have the same level of biodiversity.

Question 8

Which of the following is **not** a living part of an ecosystem?

Accepted Answer

Buildings

Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 9

Plants and algae are types of:

Accepted Answer

Producers

Answer

Consumers

Answer

Decomposers

Answer

Predators

Question 10

What do decomposers do in an ecosystem?

Accepted Answer

Decompose dead plants and animals

Answer

Provide food for other organisms

Answer

Eat plants and animals

Answer

Clean water

Question 11

Which of these relationships is an example of two organisms working together to benefit each other?

Accepted Answer

Mutualism

Answer

Predator-prey

Answer

Parasitism

Answer

Commensalism

Question 12

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Evaporation

Question 13

Which term describes the number of different types of species in an ecosystem?

Accepted Answer

Biodiversity

Answer

Biomass

Answer

Population size

Answer

Carrying capacity

Question 14

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

Accepted Answer

Government laws

Answer

Living organisms

Answer

Non-living things

Answer

Weather conditions

Question 15

Which of the following shows a correct food chain?

Accepted Answer

Grass -> Grasshopper -> Bird

Answer

Sun -> Grass -> Grasshopper -> Bird

Answer

Bird -> Grasshopper -> Grass

Answer

Grass -> Bird -> Grasshopper

Question 16

Which of these is an example of organisms depending on each other for survival?

Accepted Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Answer

Predation

Question 17

What is the role of decomposers in an ecosystem?

Accepted Answer

Break down dead plants and animals

Answer

Create new air

Answer

Break down water

Answer

Use sunlight to make food

Question 18

The interaction between different groups of living things in an ecosystem is called:

Accepted Answer

Community ecology

Answer

Population ecology

Answer

Ecosystem ecology

Answer

Biological interactions

Question 19

What is the main source of energy for almost all ecosystems?

Accepted Answer

Sun

Answer

Wind

Answer

Deep inside the Earth

Answer

Fossil fuels

Question 20

Which part of an ecosystem is not living?

Accepted Answer

Rocks

Answer

Trees

Answer

Animals

Answer

Plants

Question 21

What process do plants use to create their own food using sunlight?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Excretion

Answer

Digestion

Question 22

Which animal is a hunter that eats other animals?

Accepted Answer

Hawk

Answer

Deer

Answer

Rabbit

Answer

Frog

Question 23

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead plants and animals and return nutrients to the soil.

Answer

Make food for other living things.

Answer

Eat living organisms.

Answer

Provide homes for other living things.

Question 24

Which of the following is a resource that can be replaced naturally?

Accepted Answer

Wind

Answer

Coal

Answer

Natural gas

Answer

Petroleum

Question 25

Which of these is NOT a danger to ecosystems?

Accepted Answer

Animals learning to live in their environment.

Answer

Pollution

Answer

Losing habitats

Answer

New species being introduced

Question 26

Which of these is a non-living part of an ecosystem?

Accepted Answer

Water

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 27

What do we call the process by which plants use sunlight to make their own food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Decomposition

Question 28

What is the job of decomposers in an ecosystem?

Accepted Answer

To eat dead things

Answer

To make food

Answer

To control the number of animals

Answer

To make new soil

Question 29

What's the difference between a producer and a consumer in an ecosystem?

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 and consumers both make their own food

Answer

Producers and consumers both eat other living things

Question 30

Which of the following is NOT a component of an ecosystem on Earth?

Accepted Answer

Things from space

Answer

Plants

Answer

Animals

Answer

Non-living things

Question 31

What is the word for the variety of different living things in an ecosystem?

Accepted Answer

Biodiversity

Answer

Population

Answer

Community

Answer

Habitat

Question 32

What do producers do in an ecosystem?

Accepted Answer

Make their own food using the sun

Answer

Eat other living things

Answer

Break down dead things

Answer

Control the water

Question 33

Which of these is an example of a relationship where both living things benefit?

Accepted Answer

A bird building a nest in a tree

Answer

A lion eating a zebra

Answer

Two animals fighting over food

Answer

A parasite living on a host

Question 34

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

Accepted Answer

Photosynthesis

Answer

Breathing

Answer

Decay

Answer

Sweating

Question 35

What is the job of decomposers in an ecosystem?

Accepted Answer

To break down dead things

Answer

To make oxygen

Answer

To eat plants

Answer

To control the water

Question 36

What is the name for the study of ecosystems?

Accepted Answer

Ecology

Answer

Biology

Answer

Chemistry

Answer

Physics

Question 37

Which of these is something humans can do to help ecosystems?

Accepted Answer

Protecting them

Answer

Making pollution

Answer

Cutting down all the trees

Answer

None of these

Question 38

What is NOT a part of an ecosystem?

Accepted Answer

The force that pulls objects towards each other

Answer

Living things

Answer

Non-living things

Answer

Climate

Question 39

Which of these makes its own food from sunlight?

Accepted Answer

Grass

Answer

Fox

Answer

Bacteria

Answer

Mushroom

Question 40

What is the term for all the living organisms in an ecosystem?

Accepted Answer

Community

Answer

Population

Answer

Biosphere

Answer

Habitat

Question 41

How do different organisms interact within an ecosystem?

Accepted Answer

Competition, predation, and symbiosis

Answer

Only through competition

Answer

Only through symbiosis

Answer

They do not interact directly

Question 42

What is the role of decomposers in an ecosystem?

Accepted Answer

To break down dead plants and animals

Answer

To produce food for other organisms

Answer

To provide shelter for other organisms

Answer

To regulate the population of certain species

Question 43

What is the difference between a producer and a consumer in an ecosystem?

Accepted Answer

Producers make their own food, while consumers eat other organisms.

Answer

Producers eat other organisms, while consumers make their own food.

Answer

Both producers and consumers make their own food.

Answer

There is no difference between producers and consumers.

Question 44

Which item is not a basic element in all ecosystems?

Accepted Answer

Manufactured objects

Answer

Living organisms

Answer

Non-living surroundings

Answer

Energy transfer

Question 45

What is the process by which plants create their own food using sunlight called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Transpiration

Question 46

Which of these creatures acts as a producer in an ecosystem?

Accepted Answer

Grass

Answer

Rabbit

Answer

Hawk

Answer

Snake

Question 47

What term describes the variety of living things found within an ecosystem?

Accepted Answer

Biodiversity

Answer

Biosphere

Answer

Ecosystem

Answer

Habitat

Question 48

How do decomposers contribute to ecosystems?

Accepted Answer

They decompose dead organisms.

Answer

They produce oxygen.

Answer

They consume producers.

Answer

They regulate the climate.

Question 49

What is the name for the specific area where an organism lives and interacts with others?

Accepted Answer

Habitat

Answer

Ecosystem

Answer

Biosphere

Answer

Biome

Question 50

What is the primary function of energy flow in an ecosystem?

Accepted Answer

Powers all ecological processes

Answer

Creates new organisms

Answer

Regulates temperature

Answer

Purifies water

Question 51

Which of the following describes a mutually beneficial relationship between organisms?

Accepted Answer

Mutualism

Answer

Predation

Answer

Competition

Answer

Parasitism

Question 52

In an ecosystem, which one is NOT a living part?

Accepted Answer

Rocks

Answer

Plants

Answer

Animals

Answer

Decomposers

Question 53

What do producers do in an ecosystem?

Accepted Answer

Make their own food using sunlight

Answer

Eat other living things

Answer

Break down dead things

Answer

Move nutrients around

Question 54

Which of these is a relationship where both organisms benefit?

Accepted Answer

Mutualism

Answer

Predation

Answer

Parasitism

Answer

Competition

Question 55

What do we call the place where an animal or plant lives?

Accepted Answer

Habitat

Answer

Ecosystem

Answer

Biome

Answer

Niche

Question 56

What is a desert like?

Accepted Answer

Dry and not very green

Answer

Rainy and lush

Answer

Very green with many plants and animals

Answer

Lots of big lakes

Question 57

What is the name of the process where nutrients are put back into the ecosystem?

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Evaporation

Question 58

What is the most important job that bacteria do in an ecosystem?

Accepted Answer

Break down dead things

Answer

Make oxygen

Answer

Add nitrogen to the soil

Answer

Kill pests

Question 59

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

Accepted Answer

Laws

Answer

Living organisms

Answer

Non-living things

Answer

Energy

Question 60

Plants and algae are called producers because they:

Accepted Answer

Make their own food

Answer

Consume other organisms

Answer

Break down dead organisms

Answer

Provide shelter for animals

Question 61

The process of breaking down dead organisms and returning their nutrients to the ecosystem is called:

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Question 62

A group of the same kind of animals that live together in the same place is called a:

Accepted Answer

Population

Answer

Community

Answer

Habitat

Answer

Ecosystem

Question 63

Which of the following is NOT an example of an ecosystem?

Accepted Answer

Zoo

Answer

Forest

Answer

Ocean

Answer

Desert

Question 64

Climate change can affect ecosystems in many ways. What is one way we can help protect ecosystems from the impacts of climate change?

Accepted Answer

Reduce greenhouse gases and switch to using clean energy sources, like solar and wind power

Answer

Do nothing, and the ecosystems will fix themselves

Answer

Move all the plants and animals from ecosystems that are affected by climate change to new ecosystems