Biology Questions - Help!

Posted on 2013-11-22 18:38:00 in Biology by DCEFA123

1. No two species can occupy the same niche (use the same resources in the exact same way)

is a definition used for ________.

a. the competitive exclusion principle

b. resource partitioning

c. intraspecific competition

d. none of the above



2. The concept described in the previous question was developed by ______.

a. Connell d. MacArthur

b. Gause e. Odum

c. Lotka and Voltera



3. Grown alone in an aquarium, Species A reaches a population size of 100 and Species B

reaches a population size of 250. When grown together in the aquarium, Species A grows to

140 and Species B grows to 200. This is likely an example of ________ when grown

together.

a. a mutualism d. an ammensalism

b. competition e. predation

c. a commensalism



4. Which of the following is NOT a life history characteristic that influences natality?

a. Litter or clutch size

b. Number of reproductive events per lifetime

c. Age at first reproduction

d. All of the above influence natality



5. The black and white color of a skunk is an example of ________.

a. warning coloration c. aposematic coloration

b. blending coloration d. two of the above



6. Which of the following does not lead to a change in gene frequencies through time?

a. random mating

b. gene flow

c. natural selection

d. genetic drift

7. Brazilian free-tailed bats and big brown bats forage in the same habitat and on the same

group of insects. However, free-tailed bats forage just after dusk and just before dawn,

whereas brown bats forage in the middle of the night. This is an example of __________.

a. interference competition c. resource partitioning

b. time-segregation theory d. co-dependence



8. Under heavy Natural Selection pressures, mutation rate is accelerated.

a. true b. false

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