Ecosystems: Dive into the World of Living Things

Question 1

Which of these is NOT a natural ecosystem?

Accepted Answer

A car factory

Answer

A tropical rainforest

Answer

A coral reef

Answer

A mountain range

Question 2

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

Accepted Answer

Sunlight

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 3

What do producers do in an ecosystem?

Accepted Answer

Make food for themselves and others

Answer

Eat other organisms

Answer

Break down dead things

Answer

Provide homes for animals

Question 4

Which kind of ecosystem has tall trees and lots of plants growing underneath?

Accepted Answer

Forest

Answer

Grassland

Answer

Tundra

Answer

Desert

Question 5

What do we call the variety of living things in an ecosystem?

Accepted Answer

Biodiversity

Answer

Biome

Answer

Habitat

Answer

Niche

Question 6

Which of these human actions can hurt ecosystems?

Accepted Answer

Making pollution

Answer

Planting trees

Answer

Saving water

Answer

Recycling

Question 7

How do plants make their own food?

Accepted Answer

Photosynthesis

Answer

Breathing

Answer

Rotting

Answer

Evaporation

Question 8

Which of these is an animal that eats plants?

Accepted Answer

Deer

Answer

Grass

Answer

Hawk

Answer

Fox

Question 9

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

Accepted Answer

Habitat

Answer

Ecosystem

Answer

Biome

Answer

Niche

Question 10

Which of these is NOT a type of ecosystem that is found in water?

Accepted Answer

Forest

Answer

Ocean

Answer

Lake

Answer

River

Question 11

What do decomposers do in an ecosystem?

Accepted Answer

Break down dead things and return nutrients to the soil

Answer

Make food for themselves and others

Answer

Provide shelter for animals

Answer

Control the weather

Question 12

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

Accepted Answer

Sunlight

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 13

What is the name of the process by which plants use sunlight to make their food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Decomposition

Question 14

Which of the following is a type of ecosystem that is found in water?

Accepted Answer

River

Answer

Forest

Answer

Grassland

Answer

Desert

Question 15

What is the job of decomposers in an ecosystem?

Accepted Answer

Break down dead organisms

Answer

Create new plants

Answer

Eat plants and animals

Answer

Make oxygen

Question 16

What are the non-living parts of an ecosystem called?

Accepted Answer

Abiotic factors

Answer

Biotic factors

Answer

Producers

Answer

Consumers

Question 17

Which of these is NOT an example of an ecosystem?

Accepted Answer

Galaxy

Answer

Forest

Answer

Ocean

Question 18

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

Accepted Answer

Human-made objects (buildings, cars)

Answer

Living organisms (plants and animals)

Answer

Non-living things (air, water, soil)

Question 19

What is NOT a living part of an ecosystem?

Accepted Answer

Water

Answer

Plants

Answer

Animals

Answer

Mushrooms

Question 20

What do we call the variety of different living organisms in an ecosystem?

Accepted Answer

Biodiversity

Answer

Ecosystem diversity

Answer

Species diversity

Answer

Ecological diversity

Question 21

What happens when two living things fight over the same resources, like food or water?

Accepted Answer

Competition

Answer

Symbiosis

Answer

Mutualism

Answer

Predation

Question 22

What do decomposers, like bacteria and fungi, do in an ecosystem?

Accepted Answer

Break down dead plants and animals and put nutrients back into the soil

Answer

Make oxygen through photosynthesis

Answer

Eat other living things for food

Answer

Give homes to other living things

Question 23

Which type of ecosystem has many big trees, lots of rain, and a home to a wide variety of plants and animals?

Accepted Answer

Forest

Answer

Grassland

Answer

Desert

Answer

Tundra

Question 24

What is the main power source for most ecosystems on Earth?

Accepted Answer

Sunlight

Answer

Water

Answer

Wind

Answer

Volcanoes

Question 25

Which of these pairs of living things helps each other out?

Accepted Answer

Clownfish and sea anemones

Answer

Lions and zebras

Answer

Parasites and their hosts

Answer

Bacteria and viruses

Question 26

What do plants use to change sunlight into energy?

Accepted Answer

Photosynthesis

Answer

Breathing

Answer

Digestion

Answer

Decay

Question 27

What item is NOT a natural part of an ecosystem?

Accepted Answer

A plastic bag

Answer

A tree

Answer

A rock

Question 28

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

Accepted Answer

Objects made by humans

Answer

Living organisms

Answer

Non-living factors

Answer

Interactions between organisms and their environment

Question 29

In a forest, which of the following organisms is a primary producer?

Accepted Answer

Oak tree

Answer

Deer

Answer

Fox

Answer

Mushroom

Question 30

What type of ecosystem is home to plants and animals that live in or around water?

Accepted Answer

Wetland

Answer

Forest

Answer

Grassland

Answer

Desert

Question 31

Which of the following can harm the variety of living things in an ecosystem?

Accepted Answer

Pollution

Answer

Protecting their habitats

Answer

Planting trees

Answer

Protecting animals

Question 32

What do decomposers do in an ecosystem?

Accepted Answer

Break down plants and animals and put nutrients back in the soil

Answer

Make food using sunlight

Answer

Eat other organisms

Answer

Provide homes for other organisms

Question 33

Which of the following is an example of a predator eating its prey?

Accepted Answer

Lions chasing zebras

Answer

Birds eating seeds

Answer

Trees using sunlight

Answer

Mushrooms growing on a log

Question 34

What is the name for a group of living things that depend on each other in a specific place?

Accepted Answer

Community

Answer

Population

Answer

Ecosystem

Answer

Biosphere

Question 35

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

Accepted Answer

Artificial materials

Answer

Living organisms

Answer

Non-living factors

Answer

Relationships between living things

Question 36

What term describes the variety of living organisms in an ecosystem?

Accepted Answer

Biodiversity

Answer

Habitat

Answer

Population

Answer

Ecosystem services

Question 37

Which of these is an example of a producer in an ecosystem?

Accepted Answer

Grass

Answer

Rabbit

Answer

Snake

Answer

Fungus

Question 38

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Predation

Question 39

What is the job of decomposers in an ecosystem?

Accepted Answer

To break down dead organisms

Answer

To create food for other organisms

Answer

To provide homes for animals

Answer

To regulate water flow

Question 40

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

Accepted Answer

Heavy rainfall

Answer

Open and treeless

Answer

Grasses are the main vegetation

Answer

Supports a wide range of animals

Question 41

In an ecosystem, non-living things are called abiotic components. Which of these is an abiotic component?

Accepted Answer

Sunlight

Answer

Plant

Answer

Fish

Question 42

Where does most of the energy enter an ecosystem?

Accepted Answer

Plants and other organisms that use sunlight to make their own food

Answer

Animals that eat other animals

Answer

Non-living things like rocks and water

Answer

Tiny creatures that break down dead things

Question 43

Which of these relationships shows two species helping each other?

Accepted Answer

A bee collecting nectar from a flower and in return pollinating it

Answer

A tapeworm living in the digestive system of a dog

Answer

A remora fish attaching itself to a shark for protection

Question 44

Which human activity can disrupt the equilibrium of a forest ecosystem?

Accepted Answer

Deforestation

Answer

Planting trees

Answer

Hiking on marked trails

Answer

Controlled burning

Question 45

Which of the following is NOT a natural component of a forest ecosystem?

Accepted Answer

Plastic bottle

Answer

Soil

Answer

Animals

Answer

Trees

Question 46

Which ecosystem is dominated by tall grasses and grazing animals?

Accepted Answer

Grassland

Answer

Tundra

Answer

Forest

Answer

Desert

Question 47

Which of the following is a producer in a marine ecosystem?

Accepted Answer

Algae

Answer

Turtle

Answer

Dolphin

Answer

Fish

Question 48

What is the process by which plants use sunlight to create food for themselves?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Decomposition

Question 49

Which of the following factors influences the variety of living organisms in an ecosystem?

Accepted Answer

Climate

Answer

Teacher's salary

Answer

Number of students in a nearby school

Answer

School size

Question 50

What is the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organisms, releasing nutrients back into the soil.

Answer

They produce food for other organisms.

Answer

They provide shelter for animals.

Question 51

Which of the following is a result of human activities on ecosystems?

Accepted Answer

Deforestation

Answer

More sunlight

Answer

Increased rainfall

Answer

Lower temperatures

Question 52

What is one thing people can do to help protect and preserve ecosystems?

Accepted Answer

Reduce waste and recycle

Answer

Cut down trees

Answer

Drive their cars more often

Answer

Use more electricity

Question 53

Which of the following is an example of a keystone species?

Accepted Answer

Sea otter

Answer

Goldfish

Answer

Robin

Answer

House cat

Question 54

Why is biodiversity important in an ecosystem?

Accepted Answer

It increases the stability and resilience of the ecosystem

Answer

It reduces the number of different species in the ecosystem

Answer

It makes the ecosystem more vulnerable to change