Exam 12: Adaptation and Species

Every year, environmental signals in Africa cause flycatchers to return to the Netherlands to breed. When they arrive, they depend on freshly hatched caterpillars for food. Global climate change has caused the caterpillars to hatch earlier in the Netherlands, but the environmental cues in Africa remain the same. Now, when the flycatchers return to the Netherlands the caterpillars are no longer available as a food source. Which of the following is most likely to happen to this species of flycatcher?

In many predator-prey relationships, evolutionary change in the prey will result in evolutionary change in the predator, a phenomenon known as

Match each numbered statement to one of terms listed below. -process of evolution through natural selection

How does coevolution lead to speciation?

Individuals of the same species generally

Which of the following examples does NOT illustrate a difference in fitness that would lead to evolution by natural selection?

Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?

Which of the following is most likely an example of coevolution?

Which of the following organisms would best be identified as a species using the biological species concept?

Two biologists discover two populations of toads living in the same area. Morphologically, these two populations are different. The toads in one population have much wider heads and darker coloration than the second population. One of the biologists suggests names for the two new species. The second biologist questions whether the two populations are separate species. Why is the second biologist hesitant to declare these populations are two species?

There is color variation in a population of insects living within an area. Some individuals are solid black and other individuals are gray with green spots. Individuals who are solid black do not blend into the environment, and they tend to be eaten by predators. Explain how differences in survival rates will lead to more individuals in the population being gray with green spots.

Using reproductive isolation as a method of defining a species is NOT useful for

Based on the ________ species concept, organisms that breed asexually are most likely classified as species.

Which of the following is an example of a postzygotic barrier?

Which of the following must occur for one species to split into two or more species?

Match each numbered statement to one of terms listed below. -evolution in one species that leads to reciprocal adaptation in another species

Convergent evolution involves unrelated, or distantly related, organisms developing similar traits. How is coevolution similar to convergent evolution?

Which of the following statements best explains the role of coevolution in speciation?

Two birds that are very similar in morphology and live in the same forest exhibit different courtship behaviors. Which of the following describes the relationship of these birds?

Two populations of lizards live in the same area. Which of the following evidence would convince you that they are two distinct species?