Organismal Relationships Answers

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1
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Which of the following is an example of symbiosis?

A
barnacles living on a whale’s skin
B
a tree obtaining nutrients from the soil
C
phytoplankton absorbing the sun’s rays
D
a blue whale feeding on zooplankton
2
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What is the difference between commensalism and mutualism?

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3

What are three reasons that organisms interact?

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4

The competitive exclusion principle can lead to adaptation of organisms trying to occupy the same niche. Please select the best answer from the choices provided

A
T
B
F
5

Why is it that two species cannot occupy the same niche for an extended period of time?

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6

Explain how parasitism differs from commensalism.

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7

The competitive exclusion principle states that two organisms cannot fill the same niche.

A
T
B
F
8

What are three possible long-term consequences of two species occupying the same niche?

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9

It is beneficial for plants to have their seeds dispersed to reduce competition. Explain how a bird eating fruit is an example of mutualism.

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10

Animals marking their territory with urine is an example of _______.

A
competition
B
predation
C
commensalism
D
mutualism

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