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Symbiosis

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit. 

a)

parasitism

b)

commensalism

c)

mutualism

2.

A bee and a flower work together to benefit each other. This is an example of _________________. The bee helps the flower by pollinating it and the flower helps the bee by providing it with nectar.

a)

commensal relationship 

b)

parasitic relationship 

c)

mutual relationship 

3.

How is commensalism different from mutualism?

a)

In commensalism, one species benefits while the other is unharmed; in mutualism, both species benefit

b)

In commensalism, one species is harmed while the other benefits; in mutualism, both species benefit

c)

In commensalism, neither species is harmed; in mutualism, one species is harmed

d)

In commensalism, both species benefit; in mutualism, one species is harmed

4.

When a honeybee pollinates flowers, the bee gets access to nectar, while the flowers gain the chance to reproduce. This is an example of:

a)

Amensalism

b)

Commensalism

c)

Parasitism

d)

Mutualism

5.

Remoras are fish that swim alongside sharks, eating scraps that the sharks leave behind. This is an example of:

a)

Amensalism

b)

Commensalism

c)

Parasitism

d)

Mutualism

6.

Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales. 

a)

parasitism

b)

commensalism

c)

mutualism

7.

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 

a)

parasitism

b)

commensalism

c)

mutualism

8.

The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.

a)

parasitism

b)

commensalism

c)

mutualism

9.

Hermit Crabs live in shells made and then abandoned by snails.

a)

Commensalism

b)

Parasitism

c)

Competition

10.

Which of the following shows the symbiotic relationship between the Rodent and the Bird?

a)

Mutualism

b)

Commensalism

c)

Competition

11.

The hermit crab carrying the sea anemone on its back.

a)

mutualism

b)

commensalism

c)

parasitism

12.

Bees and a flower

a)

mutualism

b)

commensalism

c)

parasitism

13.

Which of the following is an example of mutualism in a symbiotic relationship?

a)

A) A tapeworm living in a human's intestine

b)

B) A bee pollinating a flower

c)

C) A barnacle attached to a whale

d)

D) A lion hunting a zebra

14.

In a symbiotic relationship, what is the primary benefit for the clownfish living among sea anemones?

a)

A) The clownfish receives protection from predators

b)

B) The clownfish gains nutrients from the anemone

c)

C) The clownfish helps the anemone to photosynthesize

d)

D) The clownfish cleans the anemone

15.

Which of the following best describes the relationship between nitrogen-fixing bacteria and leguminous plants?

a)

A) Parasitism, where the bacteria harm the plant

b)

B) Commensalism, where the bacteria benefit without affecting the plant

c)

C) Mutualism, where both the bacteria and the plant benefit

d)

D) Competition, where both the bacteria and the plant compete for resources