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

Population Size Answers

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1
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When population growth increases in an area, what is happening to the birth rate and age structure of that population?

A
increasing birth rate with a greater number of young organisms
B
increasing birth rate with a smaller number of old organisms
C
increasing birth rate with a smaller number of young organisms
D
increasing birth rate with a greater number of old organisms
2
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R-selected species have a short life span and an early reproduction cycle.

A
T
B
F
3

Which of the following species is a K-selected species?

A
Redwood trees
B
Fruit flies
C
Algae
D
Grasshoppers
4

A high birth to death ratio leads to smaller populations.

A
T
B
F
5

Which of the following is an example of an even population distribution?

A
corn planted in a field
B
flocks of birds
C
people in a park
D
deer in a forest
6

In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment.

A
carrying capacity
B
abiotic factor
C
limiting factor
D
biotic factor
7

Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?

A
even
B
random
C
clumped
D
density
8

Identify the biotic limiting factor from the choices below.

A
space
B
vegetation
C
water
D
climate
9

Migration is _______.

A
the movement of organisms from a native location to a foreign location
B
the movement of organisms from a foreign location to a native location
C
the movement of organisms from their water supply to their food supply
D
the seasonal movement of organisms between locations
10

Which of the following statements is true?

A
Biotic factors are nonliving components of an ecosystem.
B
Abiotic factors are living components of an ecosystem.
C
The available space in an ecosystem is an abiotic limiting factor.
D
The available water supply in an ecosystem is a biotic limiting factor.

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Population Size Answers — VA-Ecology -CRPR 26-27…