Correct option is A
The correct answer is (a) the life pattern that the organism actually assumes
Explanation:
- The realized niche is the actual set of environmental conditions and resources a species uses in the presence of competition and predation.
- It is usually narrower than the fundamental niche.
- The fundamental niche is the full range of conditions under which a species can survive and reproduce in the absence of biotic interference.
- This concept was significantly developed by G.E. Hutchinson in 1957.
- It explains how species coexist by partitioning resources.
Information Booster:
- Gause’s Competitive Exclusion Principle states that two species competing for the exact same resources cannot coexist.
- Niche overlap often leads to character displacement or local extinction of the weaker competitor.
Additional Knowledge:
Habitat resulting from clumping (Option b)
- Incorrect; this refers to population distribution or dispersion patterns, not a niche.
Habitat that exists in nature (Option c)
- Incorrect; habitat is the physical place, while a niche is the functional role and resource use.
Area in the face of exploitive competition (Option d)
- While competition defines the realized niche, a niche is defined by functional roles and multiple variables, not just physical area.
So the correct answer is (a)
