Exam 13: Adaptation and Species

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

Which of the following is one of the three important characteristics of an adaptation?

Two species live near each other but do not respond to each other's courtship displays.This is an example of ________ isolation,a type of prezygotic barrier.

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.

The red-breasted nuthatch and the white-breasted nuthatch are similar in appearance and,in many regions of the United States,their ranges overlap.The two organisms do not interbreed.Based on this information,red-breasted and white-breasted nuthatches are

Two species evolving together in response to interactions between the two species is referred to as ________.

A rain forest is a highly complex habitat with organisms living at various levels in the trees,on the ground,and underground.Is it possible to consider two populations of insects living in the same tree to be geographically isolated?

Speciation may be described as either allopatric or sympatric.What is the primary difference between the two types of speciation?

There are approximately 8.74 million eukaryotic species on Earth.Of the groups shown in the infographic below,________ make up approximately 11 percent of the known 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?

How does coevolution lead to speciation?