Question

In a hypothetical situation, a certain species of aphid feeds only on sugar maple trees. In forests of the eastern United States, sugar maples are only one of a number of different tree species. If some of the aphids develop a strong preference for feeding on Black Walnut trees and mate only with other aphids that prefer black walnut trees, then over time, which of the following processes should occur. (Remember, the host species can be considered the aphids' "habitat.")1.reproductive isolation2.allopatric speciation3.habitat isolation4.prezygotic barriers Answers: A ) 1,2,3 B) 2,3 C)1 ,3, 4 D)1 E) 1 through 4

Answer 1

Ans is,( E) :- 1 to 4.

Reproductive isolation:- they prevent number of different species from producing offspring.

Allopatric speciation :- this is geographically separate population.

Habitat isolation :- here lower is probability of mating.

Prezygotic barrier :- it prevents fertilisation from occurring.