Question

Which of the following is true regarding the fundamental and the realized niche?

Group of answer choices

The fundamental niche is usually larger than the realized niche.

A species’ fundamental niche can overlap with another species, but its realized niche cannot (at least not indefinitely).

Both the fundamental and the realized niche are a reflection of the types of resources a species uses in the environment.

The realized niche is a result of competition.

All of the statements are true.

Answer 1

Which of the following is true regarding the fundamental and the realized niche: All of the statements are true. (Option V)
Because, Both fundamental and realized niches refer to the environmental position that species occupy in an ecosystem. Fundamental niche represents all the environmental conditions where a species is able to live, and the realized niche is where the species actually lives. In a fundamental niche, organisms can take advantage of all the biotic, abiotic factors in an ecosystem without competition from other species or pressure from predators. This niche narrows when other organisms arrive and there is competition for food and breeding partners or when predators start hunting in the area. The organism will survive if it adapts to the new conditions of its realized niche.
Fundamental niches are the same size or larger than realized niches. Also, the same species living in different locations may have different realized niches depending on the competitors and predators that are present. Fundamental and realized niches can be wide and as well as narrow. Specialist species is the term for organisms that live in narrow niches because they thrive only in certain environmental conditions or eat a certain food. Generalist species occupy wider niches and make use of a variety of resources and can live in many different environmental conditions. The niche that an organism occupies may change dramatically over the course of its life.
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