AnswersEnvironmental Science ADetermining Population Size

Measuring Populations Answers

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4

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population?

A
a large elderly population
B
a large middle age population
C
a large teenage population
D
a large child population
5

Directional selection can be distinguished from disruptive selection by _______.

A
the elimination of extreme variations of traits
B
selection for two extreme variations of a trait
C
the preservation of gene frequencies
D
selection for one extreme variation of a trait
7

Stabilizing selective pressures result in _______.

A
rapid, broad evolutionary changes
B
limited evolutionary changes
C
an increase in genetic diversity
D
extreme gene distributions
8

Which of the following is the most obvious sign of cluster distribution in termites?

A
They are insects.
B
They are detritivores.
C
They are social insects.
D
Many species of termites are considered pests.
9

Natural selection is an evolutionary mechanism by which _______.

A
advantageous traits are eliminated in a population
B
advantageous traits become more common in a population
C
inherited traits pass consistently through generations
D
organisms choose which traits to look for in their offspring
10

What are the three common patterns of population distribution?

A
clumped, random, and curved
B
evenly spaced, clumped, and curved
C
clumped, evenly spaced, and random
D
random, curved, and evenly spaced
12

Which of the following best describes the relationship between jaguars and panthers?

A
Panthers and jaguars are separate species.
B
Panthers are jaguars with predominantly dark or black pigmentation.
C
Juvenile jaguars are black and called panthers.
D
During winter Jaguars’ coats change from spotted to black.

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