I desperately need help and i got a really bad grade on this test. For corrections i have to explain why the answer is right. will someone explain why these answers are right.
Thanks for all your help!!!!1) In the development of terrestrial biomes, which factor is most dependent on all the others?
Right answer: the species of colonizing animals
2) A cage containing male mosquitoes has a small earphone placed on top, though which the sound of a female mosquito is played. All the males immediately fly to the earphone and thrust their abdomens through the fabric of the cage. Which of the following best describes the reason for this behavior?
Right answer: Copulation is a fixed action pattern, and the female flight sound is a sign stimulus that initiates it.
3) A type of learning that can occur only during a brief period of early life and results in a behavior that is difficult to modify though later experiences is called.
Right answer: imprinting
4) You turn on a light and observe cockroaches scurrying to dark hiding places. What have you observed?
Right answer: Taxis
5) Which statement below about mating behavior is incorrect?
Right answer: The mating relationship in most mammals is monogamous, to ensure the reproductive success of the pair.(why is this incorrect?)
6)Learning in which an associated stimulus may be used to elicit the same behavioral response as the original sign stimulus is called?
Right Answer: Classical conditioning
7) The presence of altruistic behavior in animals is most likely due to kin selection, a theory maintaining that :
Right answer: genes enhance survival of copies of themselves by directing organisms to assists others who share those genes.
8) Which of the following would be most likely to exhibit uniform dispersion?
Right answer: red squirrels, which hide food and actively defend territories.
9) on the graph there is a line that is drawn like stair steps. Why does this curve describe in a marine crustacean that molts?
10) Assuming these age structure diagrams describes human populations, which population is likely to experience zero population growth?
Right answer: number 3
11) The presence of all of the following tend to increase species diversity except:
Right answer: competitive exclusion
12) The sum total of an organism’s interactions with the biotic and abiotic resources of its environment is called its
Right answer: ecological niche
13) Which of the following is an example of Mullerian mimicry?
Right answer: two species of unpalatable butterfly that have the same color pattern
14) Following clear cutting of a broadleaf forest several hundred years ago, the land was colonized by herbaceous species that were placed largely over time by shrubs, then by forest trees. Assuming the growth of the shrubs and trees are enhanced by the soil holding properties of the herbaceous plants, which of the following processes best describes the progression from herbaceous plants to forest trees.
Right answer: secondary succession ; facilitation
15) There are more species in tropical areas than in places further from the equator. This probably a result of
Right answer: a longer growing season
16) What is the fundamental difference between matter and energy?
Right answer: Matter is cycled through ecosystems , energy is not
17) Which of the following terms encompasses all of the others?
Right answer: heterotrophy
18) How does phosphorous normally enter the atmosphere?
Right answer: it does not enter the atmosphere biologically significant amounts