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Interactions in ecosystems

Total questions: 7

Worksheet time: 7mins

Name
Class
Date
1.

Symbiosis involves an exchange of

(a)  

2.

What is mutualism?

a)

a relationship where both organisms benefit

b)

a relationship where one organism benefits

c)

a relationship where one organism benefits and the other is harmed

d)

all of the above

3.

A relationship where one organism benefits and the other doesn't, but is not harmed is called:

a)

mutualism

b)

commensalism

c)

parasitism

d)

optimism

4.

What is a parasite?

a)

something that can help you

b)

something that doesn't help or harm you

c)

something that can harm you

d)

none of the above

5.

Which of these is an example of a cooperative relationship?

a)

cheetahs catching deer

b)

lions and hyenas fighting over meat

c)

elephants raising their young together

d)

mosquitos biting you

6.

Why is the predator-prey relationship important?

4 lines
7.

Trees compete for (a)   in a competitive relationship.