AnswersHSBIO Biology Sem 1 26-27Lab: Diffusion Across a Semi-permeable Membrane

Population Size and Structure Answers

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Which two factors can both cause a population to increase?

A
birth rate and emigration
B
birth rate and immigration
C
death rate and immigration
D
death rate and emigration
3

Which best describes the following impacts: water storage, clean energy, and flood prevention?

A
positive impact of a density-dependent limiting factor
B
positive impact of a hurricane
C
positive impact of beavers in an ecosystem
D
positive impacts of dams on society
6

What will most likely increase if there is a high death rate?

A
immigration
B
emigration
C
birth rate
D
population
7

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
8

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
habitat destruction that decreases beaver population
C
increased erosion due to improper farming techniques
D
overfishing in artificial lakes
9

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
10

Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate.

A
The population decreases.
B
The population increases.
C
The population grows too much too fast.
D
The population grows outside of its habitat.

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