week 2

Question 1

An unexpected freeze that kills a population of chipmunks is an example of ___.

Answer 1

a density-independent factor

Question 2

major terrestrial ecosystems are called ____.

Answer 2

biomes

Question 3

A population that grows exponentially without restrictions displays a ____ curve.

Answer 3

J

Question 4

In most developed countries, overall population growth rates ____.

Answer 4

are near zero, so the population size is fairly stable

Question 5

which of these is a community?

Answer 5

all of the organisms living in your home

Question 6

the Sahara Desert and the Negev Desert belong to the same ____.

Answer 6

biome

Question 7

Which of these best describes Type III survivor-ship?

Answer 7

very high death rate very early in life followed b a decline in death rate

Question 8

Which of these best describes Type I survivor-ship?

Answer 8

low death rate early in life, high death rate late in life

Question 9

What level of ecology is concerned with groups of individuals of the same species?

Answer 9

population

Question 10

____ are the dominant herbivores of savanna ecosystems.

Answer 10

insects

Question 11

What is a population?

Answer 11

a group of individuals of the same species that occupy the same general area

Question 12

Most crop pests ____.

Answer 12

have an opportunistic life history

Question 13

the red-cockaded woodpecker, an endangered species, is dependent uon ____ for maintenance of its source habitat.

Answer 13

fire

Question 14

Which of the following is not an expected result of global warming?

Answer 14

decreasing sea levels

Question 15

What level of ecology is concerned with the adaptations of individuals?

Answer 15

organismal

Question 16

Introduced species can have important effects on biological communities by ____.

Answer 16

doing all of these

Question 17

Over time, the populations of most species ____.

Answer 17

fluctuate

Question 18

In the oceans, global warming is expected to ____.

Answer 18

make the water more acidic

Question 19

The temperate zones ____.

Answer 19

are relatively wet

Question 20

A species ____ is its highest number the population can maintain based on its resources.

Answer 20

carrying capacity

Question 21

what is one important difference between savannas and temperate grasslands

Answer 21

savannas have trees

Question 22

the endangered species act aims to help protect species that

Answer 22

are in danger ofextinction

Question 23

what name is given to the seafloor

Answer 23

benthic realm

Question 24

which of these biomes is one of he most biologically production of all biomes

Answer 24

estuaires

Question 25

what are estuaires

Answer 25

regions where fresh water and salt water mix

Question 26

in what part of the ocean are phytoplankton found

Answer 26

pelagic realm

Question 27

what name is given to the open ocean

Answer 27

pelagic realm

Question 28

the greenhouse effect causes an increase in global temperatures. this increase is primarily due to

Answer 28

CO2 and other greenhouse gases slowing the escape of heat from Earth

Question 29

using a virus to control rabbit populations in Australia did not work because the rabbits became more resistant to the virus, and the virus became less lethal. this is an example of

Answer 29

coevolution

Question 30

assume in a wildcat population that cats with long legs are faster but cats with short legs are better rock climbers. because of both of these factors selective pressures favored cats with intermediate leg length. this would be an example of

Answer 30

stabilizing selection

Question 31

examples of invasive species include

Answer 31

cheat-grass and European starlngs

Question 32

according to the logistic growth model, what happens to a population when the size of the population reaches carrying capacity

Answer 32

the population stops increasing in size

Question 33

competition among individuals of the same species is

Answer 33

intraspecific competition

Question 34

an organism that is thriving is living at its

Answer 34

optimal range

Question 35

type I survivor ship curves are typical of species that exhibit

Answer 35

few offspring and good parental care

Question 36

wetlands

Answer 36

are among the riches of biomes in terms of species diversity

Question 37

water moves from land to the atmosphere through

Answer 37

transpiration and evaporation

Question 38

which of these best describes type II survivorship

Answer 38

relatively constant death rate throughout life

Question 39

which of these biomes is maintained by fire

Answer 39

chaparral