Niche is defined as :

Options

A. Position of a species in a community in relation to other species
B. Place where an organism lives
C. Place where an organism lives and performs its duty
D. Place where population perform its duty

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of Niche**:
- A niche refers to the role or function of a species within its ecosystem. It encompasses how a species interacts with other organisms and its environment.

2. **Distinguishing Between Habitat and Niche**:
- Habitat is simply the physical environment where a species lives. In contrast, a niche includes not only the habitat but also the role the species plays in that habitat.

3. **Components of a Niche**:
- The niche includes various aspects such as:
- The position of the species in the community.
- The interactions with other species (predation, competition, symbiosis).
- The resources it utilizes (food, shelter).
- The role it plays in energy flow and nutrient cycling.

4. **Correct Definition of Niche**:
- The correct definition of a niche is: "the place where an organism lives and performs its duty." This definition encapsulates both the habitat and the functional role of the species.

5. **Conclusion**:
- Therefore, the niche is defined as the role or job of a species in its habitat, which includes both where it lives and what it does there.

**Final Answer**:
Niche is defined as the place where an organism lives and performs its duty, encompassing both its habitat and its role within that habitat.

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