Ch. 53 & 54

Question 1

An oak tree produces thousands of acorns but very few grow into mature oak trees. The oak tree exhibits a ____ survivorship curve

Answer 1

Type 3

Question 2

Chimpanzees have a relatively low birth rate. They care for their young and most love a long life. The chimp survivorship curve would look like ______

Answer 2

A relatively flat line that drops steeply at the end

Question 3

Which of the following describes he distribution of survivorship or mortality for a population that has type 2 survivorship

Answer 3

The chance of death is roughly constant over all ages

Question 4

A population will always grow exponentially if

Answer 4

There are no limiting factors

Question 5

Which of the following probably exhibits exponential growth

Answer 5

Fruit flies that just colonized an island previously inhabited only by fruit bearing plants

Question 6

No population can grow indefinitely. The ultimate size of any population is limited by

Answer 6

The carrying capacity of its environment

Question 7

A populations carrying capacity

Answer 7

May change as environmental conditions change

Question 8

Assuming that r has a positive value in the formula G=rN(K-N/K). If N=K then he population will

Answer 8

Remain stable at the carrying capacity.

Question 9

Analyzing ecological footprints reveals that

Answer 9

The ecological footprint of the United States is large because per capita resource use is high

Question 10

Which one of he following would most likely be an example of a density independent factor limiting population growth

Answer 10

Environmental temperature extremes

Question 11

Which one of the following is most likely a density dependent growth regulator of animal populations

Answer 11

Number o shelter sites

Question 12

What type of population interaction between species benefits neither population

Answer 12

Competition

Question 13

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

Answer 13

Competitive exclusion

Question 14

Flounder is a type of fish that looks like the sea floor. This is an example of

Answer 14

Cryptic coloration

Question 15

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

Answer 15

Bayesian mimicry

Question 16

The poison arrow frogs dendrobates of tropical America are all brightly colored and often have very similar patterns. Each species is distasteful to predators and all possess toxic skin secretions. The adaptive relationship among these species is best termed

Answer 16

Mullerian mimicry

Question 17

A leech that attached itself to a swimmer is an example of

Answer 17

Ectoparasite

Question 18

Certain species of acacia trees have hollow thorns that house stinging ants, which Gaga know anything hay touches he tree. The ants feed on nutrients produced by the acacias. This is an example of

Answer 18

Mutualism

Question 19

If the relationship between species A and B is described as commensalism, then this means that the population growth of

Answer 19

One species increases and the other is uneffected

Question 20

Which of the following is an example of aposematic coloration

Answer 20

Stripes on a skunk

Question 21

For populations that have type 1 survivorship, mortality _____ with age

Answer 21

Increases

Question 22

For populations in which mortality is higher early in life, individuals typically begins reproduction at a relatively _____ age and produce _____ offspring

Answer 22

Younger

Many

Question 23

Which of the following is and example of exploitative competition

Answer 23

Some trees in a forest grow taller than others to gain more access to direct sunlight

Question 24

Organisms with k selected life history typically inhabit relatively _____ environments and their population growth is primarily affected by density _____ limiting factors

Answer 24

Stable

Dependent

Question 25

Which of the following traits is often associated with r selected life histories

Answer 25

Smaller body size