Question

Identify the mechanism for isolation described using the drop-down menus.

The red-legged frog breeds in ephemeral ponds from January through March. Its relative, the bullfrog, breeds in permanent ponds from late March through May.

A. Geographic Isolation
B. Anatomical Isolation
C. Behavioral Isolation
D. Temporal Isolation

Answer 1

Answer:

Geographic isolated

Geographic isolation is a term that refers to a population of animals, plants, or other organisms that are separated from exchanging genetic material with other organisms of the same species

.Temporal Isolation

Temporal isolation is when species that could interbreed do not because the different species breed at different times. This temporal difference could occur at difference times of day, different times of the year, or anything in between. For example, the field crickets Gryllus pennsylvanicus and G. veleti become sexually mature at different seasons, one in the spring and the other in the autumn.

Behavioral Isolation

Behavioral isolation refers to the fact that many species perform different mating rituals. This is a common barrier between animals. For example, certain species of crickets will only mate with males that produce a particular mating song. Other species rituals may include a mating dance or emitting a scent. These clues are ignored by species not accustomed to the ritual.

Mechanical or Chemical Isolation

Mechanical isolation is caused by structures or chemical barriers that keep species isolated from one another. For example, in flowering plants, the shape of the flower will tend to match up with a natural pollinator. Plants that do not have the correct shape for the pollinator will not receive a pollen transfer. Likewise, certain chemical barriers prevent gametes from forming. These chemical barriers will only allow sperm from the correct species to fertilize the egg.

Geographical Isolation

Geographical isolation refers to the physical barriers that exist that keep two species from mating. For example, a species of monkey that is located on an island cannot breed with another species of monkey on the mainland. The water and distance between the two species keep them isolated from one another and make it impossible for them to breed.

Answer 2

Temporal Isolation

Explanation:

• Closely related species do not interbreed with each other due to various mechanism they have developed during the course of evolution.
• The mechanisms which prevent them from mating is known as isolation which could be due to time, geography, space, behaviour and reproductive organs.
• In the given case, the frog breeds do not reproduce due to the differences in their month of breeding as red-legged frogs breed in January to March whereas bullfrog breed in March to May.
• This type of isolation which arises due to differences in the time is known as Temporal isolation.

To learn more:

1. Reproductive isolation: https://brainly.in/question/2625653