lmolmlm5006 lmolmlm5006

26-03-2021
Biology

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When two salamander species, the red-backed salamander and the valley-and-ridge salamander, occur without the other present, their jaw structures are identical, and they consume the same prey. However, when the two species co-occur, the red-backed salamander has a slower closing, stronger jaw, while the valley-and-ridge salamander has a faster closing, smaller jaw, and the two species consume different prey sizes. Which of the following is suggested by these observations?

a. Competitive exclusion
b. Preemptive competition
c. A trade-off between growing fast and competing well
d. Character displacement

Respuesta :

26-03-2021

Answer:

Option d. is correct

Explanation:

Character displacement refers to an evolutionary change that takes place when 2 similar species live in the same environment.

In the given question, it's given that when the two species occur without the other present, they consume the same prey as their jaw structures are identical.

When the two species co-occur, the two species consume different prey sizes as their jaw structures are not identical.

These observations represent Character displacement.

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