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Roles of Organisms in Ecosystems

Total questions: 43

Worksheet time: 18mins

Name
Class
Date
1.

The process by which plants and plant-like organisms make their own food is called _____________________.

a)

respiration

b)

photosynthesis

c)

chlorophyll

d)

decompose

2.

Organisms that cannot make their own food are called __________________.

a)

producers

b)

decomposers

c)

consumers

3.

A green molecule found in plants which gives plants their green color.

a)

oxygen

b)

sugar

c)

chlorophyll

d)

carbon dioxide

4.

Organisms that can make their own food are called ____________.

a)

producers

b)

consumers

c)

decomposers

5.

Plants need ___________________________________ to perform photosynthesis in plants.

a)

water

b)

light / sunlight

c)

oxygen

d)

carbon dioxide

e)

sugar

6.

Plants are ______________________ because they produce their own food.

a)

decomposers

b)

consumers

c)

producers

7.

__________________ consume plants and animals as food.

a)

producers

b)

consumers

c)

decomposers

8.

Organisms that break down the wastes and remains of dead organisms.

a)

consumers

b)

producers

c)

decomposers

9.

The ____________ is the movement of gases between plants and animals.

a)

photosynthesis

b)

carbon dioxide - oxygen cycle

c)

chlorophyll

10.

Plants take in ______________ and sunlight to make food.

a)

oxygen

b)

carbon dioxide

11.

Animals take in _____________ and give off ____________.

a)

carbon dioxide ; oxygen

b)

oxygen ; carbon dioxide

12.

____________ eat only plants.

a)

carnivores

b)

omnivores

c)

herbivores

d)

producers

13.

_______________ eat only animals.

a)

herbivores

b)

carnivores

c)

omnivores

d)

consumers

14.

__________ eat both plants and animals.

a)

herbivores

b)

omnivores

c)

carnivores

d)

decomposers

15.

Animals that hunt and eat other animals are ____________.

a)

prey

b)

predators

c)

herbivores

d)

decomposers

16.

The animals that are hunted by other animals are called _____________.

a)

predators

b)

prey

c)

decomposers

d)

producers

17.

______________ are organisms that eat plants and animals that have died.

a)

decomposers

b)

scavengers

c)

carnivores

d)

herbivores

18.

Bacteria are decomposers that use ___________ to break down the remains of plants and animals.

a)

enzymes

b)

water

c)

producers

d)

sunlight

19.

As the number of predators in an area increases, the number of prey _____________________.

a)

increases

b)

decreases

c)

stays the same

20.
__________ is an organism that only eats plants for energy.
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
Terivore
21.
__________ is an organism that only eats meat for energy.
a)
Omnivore
b)
Borivore
c)
Herbivore
d)
Carnivore
22.
__________ is an organism that eats BOTH plants and animals for energy.
a)
Omnivore
b)
Darnivore
c)
Carnivore
d)
Herbiovre
23.
Humans are...
a)
Omnivores
b)
Peepivores
c)
Herbivores
d)
Carnivores
24.
I am a...
a)
Fishivore
b)
Omnivore
c)
Carnivore
d)
Herbivore
25.
Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.
a)
Omnivore
b)
Herbivore
c)
Carnivore
d)
Delivore
26.
Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.
a)
Franivore
b)
Carnivore
c)
Herbivore
d)
Omnivore
27.
Elephants only eat leaves, fruit, nuts and grass. They are called __________.
a)
Omnivore
b)
Fortivore
c)
Herbivore
d)
Carnivore
28.
What am I?
a)
Carnivore
b)
Herbivore
29.
What am I?
a)
Herbivore
b)
Carnivore
c)
Omnivore (scavenger)
30.

I eat bamboo leaves and stems.

a)

Herbivore

b)

Carnivore

c)

Omnivore

31.

I eat seals, walrus, and fish.

a)

Herbivore

b)

Carnivore

c)

Omnivore

32.

I eat fruit, nuts, frogs and fish

a)

Herbivore

b)

Carnivore

c)

Omnivore

33.

I eat berries, nuts, insects and worms.

a)

Herbivore

b)

Carnivore

c)

Omnivore

34.

I eat grass,hay, and corn.

a)

Herbivore

b)

Carnivore

c)

Omnivore

35.

I eat mice, insects, and fish

a)

Herbivore

b)

Carnivore

c)

Omnivore

36.

I eat gazelles and zebras

a)

Herbivore

b)

Carnivore

c)

Omnivore

37.

I eat hay and grass.

a)

Herbivore

b)

Carnivore

c)

Omnivore

38.

I eat worms, caterpillars, seeds and fruit.

a)

Herbivore

b)

Carnivore

c)

Omnivore

39.
I have "eyes on the sides to help me hide!"
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
A weirdo
40.
As a predator, I am lucky to have "eyes in front to help me hunt!"
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
Ouch
41.
Why are plants called producers?
a)
They make carbon dioxide
b)
They decompose
c)
They make their own food
d)
They are omnivores
42.
All animals are...
a)
producers
b)
consumers
c)
carnivores
d)
omnivores
43.
How do decomposers help other living things in ecosystems?
a)
They release oxygen into the atmosphere
b)
They turn sunlight into energy
c)
They release matter and nutrients back into the soil
d)
They get rid of dead animals so they don't smell bad