Question

In ecology, the term 'niche' refers to \underline{\hspace{1cm}}.

• A. the ways in which species interact with biotic and abiotic factors of the environment
• B. only the abiotic factors such as temperature and rainfall
• C. the gradient change of physiochemical characteristics between two ecosystems
• D. the zone of junction or a transition area between two biomes

Hint:

"Habitat is where an organism lives; Niche is how it lives." This is the golden rule to distinguish the two concepts.

Answer 1

The Correct Option is A

Step 1: Understanding the term "niche".
In ecology, a niche signifies a species' role or position within its environment. This encompasses its interactions with biotic factors (living organisms, such as predators, prey, and competitors) and abiotic factors (non-living conditions, like temperature, light, rainfall, and soil nutrients).

Step 2: Differentiation from other ecological terms.
- A habitat is an organism's "address" (its location).
- A niche is its "profession" (its function and interactions).
- An ecotone is the transitional zone between two ecosystems.
- Niche definition includes only abiotic factors; this is incomplete.

Step 3: Evaluate options.
- (B) Incorrect → A niche involves both abiotic and biotic factors, not just abiotic.
- (C) Incorrect → This describes an ecotone gradient, not a niche.
- (D) Incorrect → A transition zone is synonymous with an ecotone, not a niche.
- (A) Correct → Aligns with the complete ecological definition of a niche. \[\boxed{\text{Interaction with biotic and abiotic factors of the environment}}\] % Quicktip