1 of 20

Levels of CO2 will increase in the global atmosphere if

global levels of photosynthesis increase.

we continue to rely on fossil fuels.

levels of cellular respiration on Earth are decreased.

we increase the number of plants on Earth.

2 of 20

Type I survivorship curves are typical of a species that exhibit

an intermediate number of offspring and an intermediate level of parental care.

few offspring and poor parental care.

few offspring and good parental care.

many offspring and good parental care.

3 of 20

If a population’s growth rate decreases as the population size approaches carrying capacity, the population’s growth follows a(n) ______ model.

exponential

mathematical

geometric

logistic

4 of 20

What level of ecology is concerned with groups of individuals of different species?

Community

Tissue

Population

Ecosystem

5 of 20

Water-storing plants and deeply-rooted shrubs are plants that characterize

tropical forests.

chapparal.

deserts

savanna.

6 of 20

Opportunistic species typically

are very long-lived.

have a large number of offspring.

are large-bodied.

reach sexual maturity slowly.

7 of 20

What will be the approximate shape of the age-structure diagram of a rapidly increasing population?

A rectangle

A pyramid

A circle

An inverted pyramid

8 of 20

Which of the following lists only abiotic environmental factors?

Food, temperature, fire, wind

Soil minerals, oxygen level, light, predators

Food, parasites, predators, competitors

Wind, temperature, soil minerals, light

9 of 20

Which of the following would be most likely to have density-dependent effects on population growth?

Fire

Storms

Food supply

Drought

10 of 20

What name is given to the open ocean?

Pelagic realm

Thermocline

Intertidal zone

Aphotic zone

11 of 20

Competition among individuals of the same species is _______ competition.

extraspecific

intraspecific

interspecific

exospecific

12 of 20

Which of these biomes is maintained by fire?

Temperate deciduous forest

Tundra

Chaparral

Desert

13 of 20

The intentional release of a natural enemy to attack a pest population is called

biological control.

coevolution.

sustainable resource management.

integrated pest management.

14 of 20

What are estuaries?

Regions where two rivers join

A freshwater biome

Regions where ocean water meets land

Regions where fresh water and salt water mix

15 of 20

To determine the density of a rabbit population, you would need to know the number of rabbits and

the factors that limit population growth.

their birth rate.

the area in which they live.

their pattern of dispersion.

16 of 20

The temperate zones

generally have a climate warmer than the tropics.

are relatively wet.

are the zones closest to the equator.

have the coolest climates on Earth.

17 of 20

Water moves from land to the atmosphere through

transpiration only.

precipitation only.

evaporation and precipitation.

transpiration and evaporation.

18 of 20

The ecological footprint of the United States

shows that Americans consume a disproportionate amount of food and fuel.

is about the same as the global average.

shows that its population size is increasing slowly.

is lower than the global average.

19 of 20

Which of the following is a behavioral response to environmental variability?

Evolutionary adaptation

Growing a heavier coat of fur

Migrating to a different location

Growing a larger size

20 of 20

In the absence of limiting factors, what shape does a population’s growth curve most closely resemble?

S

J

U

?