In studies of two species of barnacles in the marine intertidal zone it was observed that Chthamalus can live in the upper intertidal zone and the lower intertidal zone if Semibalanus is absent,and Semibalanus can only live in the lower zone because it is more subject to dehydration.Based on this,which of the following statements are true? Check all that apply.
A)The realized niches of the two species differ.
B)The fundamental niche of Chthamalus is larger than its realized niche.
C)The fundamental niche of Chthamalus is larger than the fundamental niche of Semibalanus.
D)The fundamental and the realized niches of Chthamalus are the same.
E)The fundamental and the realized niches of Semibalanus are the same.

Question

Quizplus · Accepted Answer

A) The realized niches differ because Chthamalus can live in both zones when Semibalanus is absent, but only lives in the upper zone when Semibalanus is present, indicating competition affects their niches.B) Chthamalus's fundamental niche includes both the upper and lower zones, but its realized niche is reduced to the upper zone due to competition with Semibalanus, making the fundamental niche larger.C) Since Chthamalus can live in both the upper and lower intertidal zones while Semibalanus can only live in the lower zone, Chthamalus's fundamental niche is larger.E) Semibalanus's fundamental and realized niches are the same because it can only live in the lower zone, both in the presence and absence of competition.

In Studies of Two Species of Barnacles in the Marine