Organismal Relationships Answers

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Which of the following scenarios is representative of parasitism?

A
Tapeworms living in a mammal’s intestinal tract
B
Remora fish attaching themselves to sharks
C
Birds feeding on insects stirred up by grazing animals
D
Birds eating scraps of food from a crocodile’s teeth
3

Competitive exclusion occurs when _______.

A
organisms attempt to fill the same niche
B
organisms mark their territory
C
organisms experience intraspecific aggression
D
organisms have a symbiotic relationship
4

Which of the following scenarios is representative of mutualism?

A
Barnacles living on whales
B
Bees pollinating flowers
C
Birds feeding on insects stirred up by grazing animals
D
Mosses living on tree trunks
5

Which of the following is an example of a niche?

A
A squirrel living in a tree.
B
A fish in a pond.
C
A lion hunting for zebra in a grassland.
D
Two birds flying in the air.
6

What are the three types of symbiosis?

A
predation, mutualism, and parasitism
B
mutualism, commensalism, and parasitism
C
competition, predation, and commensalism
D
parasitism, predation, and competition

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