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Question 1

An organism’s ________ includes its ____________.

Answer 1

A) ecological niche, habitat

Question 2

Which of the following would be included in a species’ ecological niche?

Answer 2

D) All of the above are parts of the niche

Question 3

Attributes of a broad niche could include an organism having

Answer 3

D) all of the above

Question 4

If two different species with extremely similar niches came to occupy the same geographical area, which of the following would be expected to occur?

Answer 4

D). one species would decrease its niche through resource partitioning

Question 5

The full range of resources a species could use if there were no competition from other species is known as its

Answer 5

A) fundamental niche

Question 6

The main difference between a species’ fundamental niche and its realized niche is

Answer 6

C) the realized niche is the niche used and is smaller than the fundamental niche

Question 7

What concept, habitat or niche do the following questions refer to: where does it produce young, where does it lay eggs, what materials does it make nests out of?

Answer 7

B) niche

Question 8

Which of the statements best describes competition for a niche?

Answer 8

D. two species could divide the niche through resource partitioning

Question 9

Which sentence(s) below are correct about niches?

Answer 9

B. No two species can share the same niche in the same habitat.

Question 10

The resources a population uses in the absence of competition or under ideal conditions.

Answer 10

D. fundamental niche

Question 11

A group of organisms of different species living together in a particular place is called

Answer 11

A. a community

Question 12

An intense form of intraspecific competition in which an organism defines and defends its space is

Answer 12

C) territoriality

Question 13

Starting on bare rock, what is the usual ecological succession of organisms?

Answer 13

A) lichens ( grasses ( shrubs ( trees

Question 14

Under which of the following circumstances would interspecific competition be most obvious?

Answer 14

D. when a nonnative organism is introduced to a community

Question 15

During predation, the organism that pursues and consume the other is called the ____.

Answer 15

D. predator

Question 16

One option of the law of competitive exclusion is

Answer 16

B) resource partitioning

Question 17

When goats were introduced to an island off the California coast, the goats inhabited the same areas and ate the same plants as native deer. The deer population dwindled and finally disappeared. This is an example of

Answer 17

D. competitive exclusion

Question 18

When two species compete for exactly the same resources (or occupy the same niche),one is likely to more successful. One species outcompetes the other and eventually the second species may be eliminated.

Answer 18

C. competitive exclusion principle

Question 19

Co-evolution is illustrated by

Answer 19

D) all of the above.

Question 20

A keystone species is one that

Answer 20

A) has a broad impact, directly or indirectly influencing the success of a significant number of other species in an ecosystem.

Question 21

If removing one species from a community caused the entire functionality of the community to be influenced, the removed species was most probably a

Answer 21

C) keystone species

Question 22

One way that predation is a factor in evolution is

Answer 22

A) predators are most successful at preying on weaker, least fit prey

Question 23

How does predation differ from parasitism?

Answer 23

A. parasites rarely kill their host while predators kill their prey

Question 24

+/- interaction

Answer 24

B. predation

Question 25

A relationship in which one species benefits while the other is neither helped nor harmed to any significant degree is best labeled

Answer 25

B) commensalism.

Question 26

+ / 0 interaction

Answer 26

D. commensalism

Question 27

A relationship in which a member of one species obtains its nourishment by living on, in, or near a member of another species over an extended time is best labeled

Answer 27

C) parasitism.

Question 28

A relationship in which both species benefit is best labeled

Answer 28

B) mutualism.

Question 29

The relationship between a flower and the insect that feeds on its nectar is an example of

Answer 29

A. mutualism because the flower provides the insect with food, and the insect pollinates the flower.

Question 30

+ / + interaction

Answer 30

mutualism

Question 31

The main difference between primary and secondary succession is that

Answer 31

B) primary succession occurs on barren, rocky areas and secondary succession occurs on disturbed areas

Question 32

The one distinguishing feature between primary and secondary succession that causes primary succession to take a much longer time to occur is that

Answer 32

B) secondary succession already has soil formed

Question 33

Which of the following is NOT an example of secondary succession?

Answer 33

B) bare rock

Question 34

You are an evolutionary entomologist. You have observed beetles that can raise their abdomens and give off a defensive chemical that generally repels predators. You discover a new species of beetle that raises its abdomen in a threatening way similar to the first species, but no defensive chemical is given off. You are most likely to characterize this defensive strategy as a form of

Answer 34

C) Batesian mimicry

Question 35

The flower fly resembles a honeybee, but the flower fly has no stinger. This is an example of

Answer 35

A. Batesian mimicry

Question 36

Which of the following helps a prey species avoid being detected by a predator?

Answer 36

C. cryptic coloration

Question 37

Warning coloration

Answer 37

A. aposematic coloration

Question 38

When several harmful animals have the same coloration

Answer 38

B. Mullerian mimicry

Question 39

Deceptive markings like large fake eyes or false heads

Answer 39

E. mimicry

Question 40

When a harmless animal has similar coloration as a harmful animal

Answer 40

G. Batesiam mimicry

Question 41

When an animal eats plants

Answer 41

H. herbivory

Question 42

Any color, pattern or shape that enables an animal to blend in with its surroundings

Answer 42

J

Question 43

Some species coexist in spite of apparent competition for the same resources. Closer study reveals that they occupy slightly different niches; dividing up the resources by pursuing different resources or securing resources in a slightly different way.

Answer 43

F. resource partitioning

Question 44

Two species of finches that live on two different islands have similar beaks, both suited for using the same food supply. On a third island, they coexist, but due to evolution, the beak of each bird species is different. This minimizes competition by enabling finch to feed on seeds of a different size.

Answer 44

I. character displacement