AnswersVA-Ecology -CRPR 26-27 MC S1Freshwater and Marine Biomes

Organismal Relationships Answers

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1
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The terms commensalism and mutualism have the same meaning and are interchangeable. Please select the best answer from the choices provided

A
T
B
F
2
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Which of the following is not an example of predation?

A
A blue whale feeding on zooplankton
B
A tree obtaining nutrients from the soil
C
A caterpillar eating the leaves of a tree
D
A wolf eating a deer
3

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
4

Many dogs bark when unknown individuals approach their house. What type of interaction is this?

A
Mutualism
B
Predation
C
Symbiosis
D
Competition
5

Some types of organisms obtain needed energy through predation.

A
T
B
F
6

The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict about allowing nonnative species onto the islands?

A
It is so strict because a foreign species could mate with a native species and create a new species.
B
It is so strict because a foreign species could become a problem for tourism.
C
It is so strict because a foreign species could compete with a native species and drive it to extinction.
D
It is so strict because a foreign species may not be able to survive in a new environment.
7

The organism P. malariae lives in red blood cells, causing the host organism to experience high fevers and chills. What type of relationship is this?

A
Mutualism
B
Commensalism
C
Parasitism
D
Competition
8

The competitive exclusion principle states that two organisms cannot fill the same niche. Please select the best answer from the choices provided

A
T
B
F
9

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
10

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.

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