APES Ecology and Biodiversity Review

Question 1

Which endangered population in the United States has benefitted from captive breeding?

Accepted Answer

California condor

Question 2

Which of the following is NOT a key component of the theory of evolution by natural selection?

Accepted Answer

Differences in traits are not associated with survival

Question 3

Plant roots absorb ammonium and nitrate ions for making DNA, amino acids, and proteins.

Accepted Answer

Assimilation

Question 4

Which of the following is biotic?

Accepted Answer

Decomposers

Question 5

Process by which an essential soil nutrient is reduced and released to the atmosphere as a gas:

Accepted Answer

Denitrification

Question 6

Which is NOT an ecological service provided by wetlands?

Accepted Answer

Wetlands are often used for agriculture because of soil type

Question 7

Which does NOT describe patterns of population growth?

Accepted Answer

Population size is not affected by other populations

Question 8

Of the following organisms, which occupies the lowest trophic level?

Accepted Answer

Gazelle

Question 9

The most severe effect resulting from loss of insect species globally would likely be

Accepted Answer

a decline in food crop pollination

Question 10

Which does NOT contribute to an increase in the biodiversity of an ecosystem?

Accepted Answer

Habitat loss

Question 11

Two major processes involved in the carbon cycle are

Accepted Answer

photosynthesis and respiration

Question 12

What is a watershed?

Accepted Answer

Area of land that drains to a water body

Question 13

Which group of organisms currently has the largest number of threatened species?

Accepted Answer

Amphibians

Question 14

After a forested area is clear-cut, what type of succession occurs?

Accepted Answer

secondary

Question 15

A forest has a GPP of 4.9 kg C/m2/yr & the respiration rate is 3.1 kg C/m2/yr. What is the NPP?

Accepted Answer

1.8 kg C/m2/year

Question 16

Which of the following would have the LEAST effect on how successful a species is at adapting?

Accepted Answer

Amount of parental care

Question 17

The major biological source of dissolved oxygen in the ocean comes from

Accepted Answer

photosynthesis by phytoplankton

Question 18

Which of the following is the approximate energy transfer efficiency between trophic levels?

Accepted Answer

10%

Question 19

An abrupt transition in habitat that brings two communities into contact is called

Accepted Answer

an edge habitat

Question 20

Which of the following is generally true of K-strategist species as compared to r-strategists?

Accepted Answer

They have longer life spans

Question 21

The physical expression of an organism's genes is called its

Accepted Answer

Phenotype

Question 22

The ultimate source of energy for terrestrial ecosystems is

Accepted Answer

the Sun

Question 23

Characteristics that tend to increase the risk of a species becoming extinct include:

Accepted Answer

All of these are correct

Question 24

When a population suddenly reduces in size from habitat loss or other changes, this is called:

Accepted Answer

Bottleneck effect

Question 25

High rates of species extinction caused by human activities have taken place

Accepted Answer

During recent times

Question 26

Which of the following is exemplified by starlings displacing bluebirds from nesting sites?

Accepted Answer

Competition

Question 27

Which of the following is the best long-term method of preventing extinctions?

Accepted Answer

Protecting habitat

Question 28

How is the majority of energy within an ecosystem lost?

Accepted Answer

Heat loss

Question 29

Which biome is characterized by the presence of permafrost?

Accepted Answer

Tundra

Question 30

Two species that have a high degree of niche overlap will

Accepted Answer

compete intensely

APES Ecology and Biodiversity Review

Questions 30

APES Ecology and Biodiversity Review

Questions 30