Week 17 Ecology Part II

Question 1

All populations of different species living and interacting within an ecosystem are referred to collectively as a(n) ________.

Community
Population
Organism
Biosphere

Answer 1

Community

Question 2

An animal that blends with its background to escape predation will be exhibiting ______________.

warning
predation
mimicry
crypsis

Answer 2

crypsis

Question 3

All of the organisms living together in a particular habitat and their interactions with their non-living environment are called:
communities
biosphere
ecosystems
populations

Answer 3

ecosystems

Question 4

At the ________ level, an ecologist might focus on the factors that affect the relative abundance of various populations in the area.

Community
Biosphere
Population
Organismal

Answer 4

Community

Question 5

A group of individuals of the same species that occupies a given area is referred to as a(n) ________.
Organisms
Ecosystem
Community
Population

Answer 5

Population

Question 6

The living, or ________, and nonliving, or ________, components of the environment interact within an ecosystem.

population; air
abiotic; biotic
biotic; abiotic
bio; non-bio

Answer 6

biotic; abiotic

Question 7

________ is the scientific study of the relationship between organisms and their environment.
Ecosystem
Biotic
Biosphere
Ecology

Answer 7

Ecology

Question 8

Logistic population growth patterns are indicative of what?

a disruption of carrying capacity
limited resources
no competition
unlimited resources

Answer 8

limited resources

Question 9

At the ________ level, an ecologist might focus on the factors that affect the diet of a bird in a habitat.

Organismal
Biosphere
You Answered
Community
Population

Answer 9

Organismal

Question 10

A systematic compilation of mortality and survival data for a population is called a(an) _________________.
survivorship curve
cohort group
life table
age pyramid

Answer 10

life table

Question 11

The energy driving the global water cycle is provided by __________.
rotation of the earth on its axis
wind
solar energy
tides

Answer 11

solar energy

Question 12

The topmost part of the earth’s crusts were living organism are found is known as _______________.
Atmosphere
Core
Mantle
Lithosphere

Answer 12

lithosphere

Question 13

If a population exhibits a death rate that exceeds its birth rate, it is likely to ________.
increase
decrease
remain the same
decrease, then increase

Answer 13

decrease

Question 14

Based on energy transfer in trophic levels of an ecosystem, which of these group of organisms will receive the least amount of energy?

Tertiary consumers
Producers
Secondary consumers
Primary consumers

Answer 14

Tertiary consumers

Question 15

Select the best definition of the term demography.

the qualitative study of population growth
the statistical study of population dynamics
the qualitative study of ecosystem diversity
the statistical study of population characteristics

Answer 15

the statistical study of population dynamics

Question 16

The Yellowstone grizzly bear was on the Endangered Species list for many years, the bear’s numbers have rebounded considerably. Study of the interaction between the bears and cutthroat trout fishes occurs at what level?

Biosphere ecology
Population ecology
Organismal ecology
Community ecology

Answer 16

Community ecology

Question 17

The California Condor was declared an extinct species in the 1980s. The birds have been reintroduced and their numbers have since increased considerably. Study of these birds occurs at what level?

Organismal ecology
Population ecology
Ecosystem ecology
Community ecology

Answer 17

Population ecology

Question 18

The process by which water travels in a sequence from the air to Earth and returns to the atmosphere is referred to as the ________ cycle.

earth

evaporation

hydrologic

carbon

Answer 18

hydrologic

Question 19

With a typical predator and prey, when the prey population increases,

the predator population increases

the predator population remains stable

the predator population decreases

the predator has difficulty finding mates

Answer 19

the predator population increases

Question 20

When the conditions are favorable for a population at low density, such as when a species colonizes a new environment, population growth is typically ______________.
Group of answer choices

exponential

logistic

tangential

dynamic

Answer 20

exponential

Question 21

How size of an individual organism generally in a highly dense population is likely to be?

Group of answer choices

no correlation

small

medium

large

Answer 21

small