Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Interactions in Ecosystems

Total questions: 48

Worksheet time: 26mins

Name
Class
Date
1.

All the living organisms and their environment in a certain section of the earth is called _______________________.

a)

population

b)

community

c)

ecosystem

d)

niche

2.

Each living member of an ecosystem is called ____________________.

a)

population

b)

individual

c)

community

d)

consumer

3.

All the organisms of the same species that live in an ecosystem are called

a)

population

b)

niche

c)

community

d)

food chain

4.

All the different species that live in an ecosystem are

a)

individuals

b)

populations

c)

community

d)

habitat

5.

The place where an organism lives is its

a)

niche

b)

community

c)

ecosystem

d)

habitat

6.

An organism's specific function, or job, in the ecosystem is its

a)

symbiosis

b)

niche

c)

habitat

d)

adaptation

7.

The transfer of energy and nutrients through a community is called

a)

food chain

b)

food web

c)

producer

d)

consumer

8.

Any animal that hunts and eats other animals is called a

a)

prey

b)

predator

c)

carnivore

d)

omnivore

9.

The animals that a predator hunts are called

a)

individuals

b)

food chain

c)

host

d)

prey

10.

Several food chains linked together are called

a)

symbiosis

b)

adaptations

c)

niche

d)

food webs

11.

Two or more organisms trying to use the same resources are called

a)

competition

b)

niche

c)

habitat

d)

adaptation

12.

Any special characteristics or skills that help living things survive in their environment are

a)

niches

b)

competitions

c)

adaptations

d)

learned behaviors

13.

Whenever two species interact with each other over a long period of time, it is called

a)

adaptation

b)

competition

c)

learned behavior

d)

symbiosis

14.

Any organism that lives on or inside another organism and takes food from that organism, it is called

a)

host

b)

parasite

c)

competition

d)

adaptation

15.

The plant or animal that a parasite lives on or in is a

a)

consumer

b)

scavenger

c)

host

d)

omnivore

16.

Animals leaving one ecosystem and moving to another is called

a)

adaptation

b)

hibernation

c)

migration

d)

competition

17.

A deep sleep through winter is called

a)

adaptation

b)

migration

c)

hibernation

d)

competition

18.

A tropical rainforest would be an example of

a)

a small ecosystem

b)

a large ecosystem

c)

a colder place

d)

a very dry place

19.

A rotting tree stump in the forest would be an example of

a)

a place you would find consumers

b)

a place scavengers hang out

c)

an example of a small ecosystem

d)

not an example of an ecosystem

20.

Example of living things in an ecosystem are

a)

plants

b)

animals

c)

bacteria

d)

water

21.

Examples of nonliving things in an ecosystem would be

a)

sun

b)

soil

c)

water

d)

bacteria

22.

Hawks and owls both eat mice and live in similar places. But hawks hunt by day and owls by night. This is an example of

a)

how a niche is unique to a population

b)

how symbiosis is caused from a relationship between two organisms

c)

how competition causes one population to leave

d)

how carnivores are different from herbivores

23.

What things are needed for photosynthesis to happen?

a)

oxygen

b)

carbon dioxide

c)

sunlight

d)

water

24.

Where do producers get their energy from?

a)

other producers

b)

the sun

c)

consumers

d)

decomposers

25.

Where do consumers get their energy (food) from?

a)

consumers and/or producers

b)

decomposers

c)

scavengers

d)

the sun

26.

What breaks down dead things and waste in an ecosystem?

a)

decomposers

b)

producers

c)

consumers

d)

scavengers

27.

What group eats only other consumers?

a)

carnivores

b)

herbivores

c)

omnivores

d)

scavengers

28.

What group eats only plants?

a)

carnivores

b)

herbivores

c)

omnivores

d)

scavengers

29.

What group eats both plants and animals?

a)

carnivores

b)

herbivores

c)

omnivores

d)

scavengers

30.

What group eats things that have already died?

a)

carnivores

b)

herbivores

c)

omnivores

d)

scavengers

31.

Why are scavengers beneficial to an ecosystem?

a)

They keep the populations small.

b)

They eat only diseased things.

c)

They keep the ecosystem clean.

d)

They break down waste, which adds nutrients back into the environment.

32.

Why are decomposers beneficial to an ecosystem?

a)

They provide food for consumers.

b)

They keep the ecosystem clean.

c)

They break down waste, which adds nutrients back into the environment.

d)

They keep the predator / prey relationship balanced.

33.

Which types of living organisms are often the first two links of a food chain?

a)

producer

b)

omnivore

c)

carnivore

d)

herbivore

34.

Check all that are true about how changing one part of a food web affects other organisms.

a)

If a predator population decreases, the prey population could increase.

b)

If a prey population increases, the predator population might decrease.

c)

If a predator population increases, the prey population could increase.

d)

If a prey population decreases, the predator population might decrease.

35.

What are two things that an energy pyramid shows?

a)

which animals will be migrating

b)

how energy moves through one food chain

c)

the four basic needs of all living things

d)

the sun provides energy for all living things

36.

Keeping the ecosystem balanced by forcing groups to move or die is a benefit of

a)

migration

b)

hibernation

c)

symbiosis

d)

competition

37.

The four basic needs of all living things are

a)

food

b)

water

c)

protection from consumers

d)

shelter

e)

protection from producers

38.

Three reasons why an animal may migrate are

a)

to avoid weather that is too hot or too cold

b)

to be safe from other animals

c)

to reproduce or to raise their young

d)

to search for food

39.

What are four things that happen during hibernation?

a)

the animal sleeps through winter

b)

the body temperature rises

c)

the body temperature drops

d)

little energy is used during the winter

e)

the breathing and heart rate slow down

40.

When a relationship between two organisms helps one partner and hurts another, it is called

a)

parasitism

b)

commensalism

c)

mutualism

41.

When a relationship between two organisms is beneficial to both, it is called

a)

parasitism

b)

mutualism

c)

commensalism

42.

When a relationship between two organisms helps one partner and neither helps nor harms the other, it is called

a)

parasitism

b)

mutualism

c)

commensalism

43.

Fleas causing an animal to itch but the flea gets the blood of the animal is an example of

a)

parasitism

b)

mutualism

c)

commensalism

44.

Bees getting food by collecting pollen and also moving pollen to another flower, which helps pollinate the new flower is an example of

a)

parasitism

b)

mutualism

c)

commensalism

45.

Tropical orchids growing on upper limbs of trees; the tree supports the orchid and lets it get sunlight, but it doesn't do anything for the tree is an example of

a)

parasitism

b)

mutualism

c)

commensalism

46.

God-given basic knowledge and skills that an animal needs for survival would be

a)

learned behaviors

b)

symbiosis

c)

instinct

d)

niche

47.

Behaviors that cannot be inherited are called

a)

adaptations

b)

learned behaviors

c)

instinct

d)

symbiosis

48.

Understanding the interactions in ecosystems allows a Christian to exercise good dominion by

a)

knowing what kinds of food to eat

b)

knowing whether hunting is okay

c)

living in habitats without destroying them

d)

only growing certain crops