For each description of reproductive isolation, select the option that best desc

Question

For each description of reproductive isolation, select the option that best describes it. Two species of orchids have different floral anatomy. One species of Drosophilia breed in early morning, another species of Drosophilia breed in the afternoon. Rana aurora (red-legged frog) breeds in fast-moving water. Rana catesbiana (bullfrog) breeds in ponds. Giant clams release sperm and eggs into open water, the gametes recognize one another by molecular markers on the cell surface. Indicate, as true or false, whether each of the following statements about species is a component of the biological species concept. Biological species exhibit reproductive isolation. true false Biological species are the model used for grouping extinct forms of life. true false The biological species is the largest unit of population in which successful reproduction is possible. true false

Explanation / Answer

1.

i. Mechanical isolation

ii. Temporal isolation.

iii. Habitat isolation.

iv. Gametic isolation.

2.

i. True.

According to Ernst Meyr, species are groups of interbreeding natural populations that are reproductively isolated from other such groups."

ii. False.

Biological species concept does not help in grouping extinct forms of life.

iii. True.

Species is the largest unit in population that can reproduce.

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