Ecosystems: Dive into the World of Living Things

Question 1

What does NOT belong in an ecosystem?

Accepted Answer

Buildings

Answer

Plants

Answer

Animals

Answer

Soil

Question 2

Adaptations are special features or behaviors that help living things survive in their environment. How do adaptations work? Give an example.

Accepted Answer

Adaptations help organisms blend in with their surroundings and avoid being eaten, like the white fur of a polar bear in the Arctic.

Answer

Adaptations are only found in animals.

Answer

Adaptations are not important for organisms to survive.

Answer

Adaptations only occur in extreme environments like deserts and rainforests.

Question 3

Ecosystems are constantly changing. What factors can contribute to these changes?

Accepted Answer

Natural events, such as storms or fires

Accepted Answer

Human activities, such as deforestation or pollution

Accepted Answer

Climate changes, such as shifts in temperature, precipitation, or humidity

Question 4

Imagine a coral reef with many types of fish, including colorful parrotfish. What would happen to the coral reef if all the parrotfish suddenly disappeared?

Accepted Answer

Algae would grow more and harm the coral.

Answer

Nothing would happen.

Answer

The coral would grow too much and block out the sunlight.

Question 5

What is the best definition of an ecological niche?

Accepted Answer

The specific role and needs of a species in its environment

Answer

The exact place where a species lives

Answer

The special features that make a species different

Answer

The total number of individuals of a species in an ecosystem

Question 6

How can we be responsible stewards of the natural world?

Accepted Answer

Use resources wisely and reduce waste

Accepted Answer

Protect endangered animals and their habitats

Answer

Ignore the impact of our actions on the environment

Answer

Use up natural resources quickly to make money

Question 7

In a forest, trees create oxygen and sugar through photosynthesis. Caterpillars feed on tree leaves, and birds consume the caterpillars. How does energy move through this ecosystem?

Accepted Answer

Energy flows from trees to caterpillars to birds.

Answer

Energy flows from caterpillars to trees.

Answer

Energy flows from birds to caterpillars.

Answer

Energy flows from the sun to trees to birds to caterpillars.

Question 8

Decomposers break down dead plants and animals, returning nutrients to the soil. Why are decomposers important for the health of an ecosystem?

Accepted Answer

They recycle nutrients back into the soil, which plants need to grow.

Answer

They provide food for other animals.

Answer

They remove waste from the environment.

Answer

They are not important for the health of an ecosystem.

Question 9

What is biodiversity and how does it help an ecosystem stay healthy?

Accepted Answer

Biodiversity is the variety of living things in an ecosystem, like plants, animals, and tiny organisms. It makes an ecosystem healthy and strong because it provides different resources and homes for all the living things.

Answer

Biodiversity is the number of different types of rocks and soil in an ecosystem.

Answer

Biodiversity is the number of different types of weather patterns in an ecosystem.

Answer

Biodiversity is the number of different types of human activities in an ecosystem.

Question 10

In a forest, trees have large, flat leaves. How does this adaptation help them survive in this habitat?

Accepted Answer

It increases the surface area for photosynthesis.

Answer

It attracts insects that help spread seeds.

Answer

It helps trees withstand strong winds.

Answer

It provides shade for other plants.

Question 11

Scientists use different tools to study ecosystems. Which tool allows them to learn about ecosystems from far away using remote sensing?

Accepted Answer

Remote sensing

Answer

Drones

Answer

Weather stations

Question 12

In a forest, the trees provide shelter and food for animals like squirrels, while the squirrels help the trees spread their seeds. What type of relationship is this?

Accepted Answer

Mutualism

Answer

Competition

Answer

Predator-prey

Question 13

How should humans behave towards ecosystems?

Accepted Answer

Take only what we need and leave the rest for others.

Answer

Change ecosystems to make them more useful for humans.

Answer

Ignore ecosystems because they don't directly benefit humans.

Answer

Use all the resources we want, because humans are the most important species.

Question 14

In a temperate forest, which of these is a living thing that makes its own food using sunlight?

Accepted Answer

Trees

Answer

Deer

Answer

Mushrooms

Question 15

In a food chain, energy moves from one living thing to another. What is the correct order of energy flow in a food chain?

Accepted Answer

Plant → Animal → Decomposer

Answer

Decomposer → Plant → Animal

Answer

Animal → Plant → Decomposer

Answer

Decomposer → Animal → Plant

Question 16

When an ecosystem is out of balance, what is NOT a possible outcome?

Accepted Answer

Cleaner air

Answer

Changes in animal populations

Answer

Fewer plants

Answer

More predators

Question 17

Decomposers play a crucial role in nutrient cycling. What do decomposers do, and how does their activity benefit the ecosystem?

Accepted Answer

Decomposers break down dead plants and animals, releasing nutrients back into the soil. These nutrients can then be used by other living things, like plants, to grow and thrive.

Answer

Decomposers produce oxygen in the ecosystem, which is essential for all living things to survive.

Answer

Decomposers are harmful to the ecosystem because they break down dead organisms.

Answer

Decomposers only live in water ecosystems, like ponds and oceans.

Question 18

Which of these shows a food chain?

Accepted Answer

Grass → Rabbit → Fox

Answer

Water → Plants → Animals

Answer

Rocks → Soil → Plants

Answer

Air → Water → Soil

Question 19

What is the main job of producers in an ecosystem?

Accepted Answer

To make their own food using sunlight

Answer

To break down dead organisms

Answer

To consume other organisms

Answer

To provide shelter for other organisms

Question 20

Which of these is an example of a natural ecosystem?

Accepted Answer

A forest

Answer

A zoo

Answer

A farm

Answer

An aquarium

Question 21

What is a food chain?

Accepted Answer

A sequence of organisms that eat each other

Answer

A group of organisms that live in the same place

Answer

The total number of organisms in an ecosystem

Answer

The physical environment in which organisms live

Question 22

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead organisms into simpler substances

Answer

Provide food for other organisms

Answer

Regulate the population of other organisms

Answer

Create new habitats for other organisms

Question 23

Which of these is an ecosystem with open spaces and few trees?

Accepted Answer

Grassland

Answer

Forest

Answer

Desert

Answer

Ocean

Question 24

What do decomposers do in an ecosystem?

Accepted Answer

Break down things that used to be living and put nutrients back in the ecosystem

Answer

Make food for other living things

Answer

Give homes to other living things

Answer

Control the weather

Question 25

What is the name for the place where an animal or plant naturally lives?

Accepted Answer

Habitat

Answer

Biome

Answer

Niche

Answer

Community

Question 26

Which of these helps animals stay warm in cold places?

Accepted Answer

Thick fur

Answer

Long legs

Answer

Bright colors

Answer

Big ears

Question 27

Which of these is NOT an ecosystem?

Accepted Answer

A car

Answer

A forest

Answer

A pond

Answer

A desert

Question 28

In an ecosystem, what is the relationship between producers and consumers?

Accepted Answer

Consumers eat producers.

Answer

Producers eat consumers.

Answer

They compete for resources.

Answer

They do not interact with each other.

Question 29

What is biodiversity?

Accepted Answer

The variety of living things in an ecosystem.

Answer

The amount of food in an ecosystem.

Answer

The weather in an ecosystem.

Answer

The size of an ecosystem.

Question 30

Where do most ecosystems get their energy from?

Accepted Answer

The sun

Answer

The moon

Answer

Wind

Answer

Water

Question 31

What is a food chain?

Accepted Answer

A group of organisms that eat each other in a specific order.

Answer

A map of all the different organisms in an ecosystem.

Answer

A list of all the plants in an ecosystem.

Answer

A group of animals that live in the same area.

Question 32

What is the difference between a habitat and an ecosystem?

Accepted Answer

A habitat is where an organism lives, while an ecosystem includes the organism and its surroundings.

Answer

An ecosystem is where an organism lives, while a habitat includes the organism and its surroundings.

Answer

A habitat and an ecosystem are the same thing.

Answer

A habitat is a type of ecosystem.

Question 33

Which of the following is NOT a living thing that can be found in an ecosystem?

Accepted Answer

Rocks

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 34

Which type of ecosystem is known for having the greatest variety of living things?

Accepted Answer

Forest

Answer

Desert

Answer

Grassland

Answer

Tundra

Question 35

What is a term used to describe a species that has a significant impact on its ecosystem despite its small numbers?

Accepted Answer

A keystone species

Answer

A producer species

Answer

A consumer species

Answer

A decomposer species

Question 36

Which of the following is an example of a mutually beneficial relationship between two organisms in an ecosystem?

Accepted Answer

Mutualism

Answer

Predation

Answer

Competition

Answer

Commensalism

Question 37

What is the primary role of decomposers in an ecosystem?

Accepted Answer

They break down dead plants and animals, returning nutrients to the soil.

Answer

They provide food for other organisms.

Answer

They help pollinate plants.

Answer

They control the population of pests.

Question 38

Why is biodiversity essential for an ecosystem?

Accepted Answer

It helps keep the ecosystem stable.

Answer

It makes animals compete more.

Answer

It reduces the amount of food available.

Question 39

How do predators and prey help keep an ecosystem balanced?

Accepted Answer

Predators keep the prey population from getting too big, making sure there's enough food for everyone.

Accepted Answer

Prey provide food for predators, helping them survive.

Answer

Predators and prey fight over the same food, which can hurt both populations.

Answer

Predators and prey don't really affect each other in an ecosystem.

Question 40

Let's explore the difference between a food chain and a food web. Can you provide an example of each?

Accepted Answer

**Food Chain**: A food chain is like a simple line showing who eats whom. For instance, grass grows, a grasshopper eats the grass, and a bird eats the grasshopper.

Accepted Answer

**Food Web**: A food web is like a complex network showing how different animals are connected through their eating habits. For example, grass grows, a grasshopper eats the grass, a bird eats the grasshopper, and a hawk eats the bird.

Answer

A food chain is a closed system, while a food web is an open system.

Answer

A food web is simpler than a food chain.

Question 41

Which of these is NOT a natural ecosystem?

Accepted Answer

A city

Answer

A forest

Answer

A coral reef

Answer

A meadow

Question 42

What is an ecosystem?

Accepted Answer

All the living and non-living things in a specific area

Answer

A group of animals that live together

Answer

A place where plants grow

Question 43

How do decomposers help keep an ecosystem healthy?

Accepted Answer

They break down dead plants and animals, returning nutrients to the soil.

Answer

They eat living plants and animals, keeping their populations in check.

Answer

They make oxygen through photosynthesis, which helps plants grow.

Answer

They are not important for ecosystem health.

Question 44

What is NOT a part of an ecosystem?

Accepted Answer

Playground equipment

Answer

Animals and plants

Answer

Air and water

Answer

Rocks and soil

Question 45

What is special about 'producers' in an ecosystem?

Accepted Answer

They can make their own food

Answer

They eat other animals

Answer

They help clean up the environment

Answer

They control the temperature

Question 46

What do we call it when living things in an ecosystem rely on each other to live?

Accepted Answer

Interdependence

Answer

Competition

Answer

Predation

Answer

Symbiosis

Question 47

Which of these can we use again and again?

Accepted Answer

Water

Answer

Oil and gas

Answer

Rocks

Answer

Animals

Question 48

What is the name for the journey that water takes from the Earth to the sky and back?

Accepted Answer

Water cycle

Answer

Precipitation

Answer

Evaporation

Answer

Condensation

Question 49

An ecosystem is a community of living things and the _____ that they live in.

Accepted Answer

Environment

Answer

Geography

Answer

Climate

Answer

Resources

Question 50

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

Accepted Answer

School

Answer

Forest

Answer

Desert

Answer

Ocean

Question 51

What is the role of a producer in an ecosystem?

Accepted Answer

To make their own food from sunlight

Answer

To eat other animals

Answer

To break down dead plants and animals

Answer

To provide shelter for other animals

Question 52

What is biodiversity?

Accepted Answer

The variety of living things on Earth

Answer

The number of different species in an area

Answer

The amount of sunlight in a habitat

Answer

The temperature range in an ecosystem

Question 53

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

Accepted Answer

Toys

Answer

Plants

Answer

Animals

Answer

Water

Question 54

What is the biggest ecosystem on Earth?

Accepted Answer

Ocean

Answer

Forest

Answer

Desert

Answer

Grassland

Question 55

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead plants and animals

Answer

Produce oxygen

Answer

Provide food for animals

Answer

Absorb sunlight

Question 56

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Evaporation

Question 57

How does an ecosystem typically change over time?

Accepted Answer

It transforms from a simple community to a more complex one.

Answer

It remains unchanged.

Answer

The number of living things in the ecosystem declines.

Question 58

Which of these is a type of ecosystem found in water?

Accepted Answer

Ocean

Answer

Forest

Answer

Grassland

Answer

Desert

Question 59

In an ecosystem, which of these is considered a non-living thing?

Accepted Answer

Water

Answer

Plants

Answer

Animals

Answer

Sunlight

Question 60

What is the term used to describe the different types of organisms that live in an ecosystem?

Accepted Answer

Biodiversity

Answer

Ecosystem services

Answer

Food chain

Answer

Habitat

Question 61

Which of these organisms produces its own food using sunlight?

Accepted Answer

Grass

Answer

Deer

Answer

Snake

Answer

Mushroom

Question 62

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Predation

Answer

Decompostion

Question 63

What is the name of the relationship where one organism benefits from another organism without harming it?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Answer

Competition

Question 64

What is the name of the physical place where an organism lives?

Accepted Answer

Habitat

Answer

Niche

Answer

Community

Answer

Biosphere