Answers25.26 TCEC BIO 1Populations and the Environment

Population Size and Structure Answers

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Which human activity can produce disruption of fish breeding habits, increase in mosquito population, and flood control?

A
construction of dams to produce electricity
B
construction of dams to produce electricity
C
habitat destruction that decreases beaver population
D
habitat destruction that decreases beaver population
E
increased erosion due to improper farming techniques
F
increased erosion due to improper farming techniques
G
overfishing in artificial lakes
H
overfishing in artificial lakes
3

Which two factors can both cause a population to increase?

A
birth rate and emigration
B
birth rate and emigration
C
birth rate and immigration
D
birth rate and immigration
E
death rate and immigration
F
death rate and immigration
G
death rate and emigration
H
death rate and emigration
4

The construction of wind farms has affected the migratory patterns of some bird populations. Bird populations have been noted to no longer increase and sometimes even decrease in these areas. What is this known as?

A
a density-dependent limiting factor
B
a population-independent factor
C
a density-independent limiting factor
D
a population-dependent limiting factor
7

A population of elephants becomes too large, and several members leave the population. What is this process called?

A
death rate
B
death rate
C
immigration
D
immigration
E
emigration
F
emigration
G
births
H
births
10

Which type of limiting factor affects a large population more than it affects a small population?

A
density dependent
B
density independent
C
population dependent
D
population independent

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