A: An ecological niche is usually occupied by a single species
R: More than one species can live insame habitat.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion
B. It both Assertion & Reason are true but the reason is not the correct explanation of the assertion
C. If Assertion is true statement but Reason is false
D. If both Assertion and Reason are false statements

Answer

To analyze the statements provided in the question, we need to evaluate both the assertion (A) and the reason (R) carefully.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "An ecological niche is usually occupied by a single species."
- An ecological niche refers to the role or function of a species within its ecosystem, including its habitat, resource use, and interactions with other organisms.
- It is generally accepted that a niche is specific to a single species because it encompasses all the biotic (living) and abiotic (non-living) factors that affect that species.

2. **Understanding the Reason (R)**:
- The reason states that "More than one species can live in the same habitat."
- This statement is true; multiple species can inhabit the same habitat. However, they may occupy different niches within that habitat to avoid competition for resources.

3. **Evaluating the Truth of Each Statement**:
- Both statements are true:
- The assertion (A) is true because a niche is specific to a single species.
- The reason (R) is also true because many species can coexist in the same habitat, but they do so by occupying different niches.

4. **Determining the Relationship Between A and R**:
- The reason (R) does not explain the assertion (A). While it is true that multiple species can live in the same habitat, this does not contradict the idea that a niche is typically occupied by a single species.
- Thus, the reason does not provide a correct explanation for the assertion.

5. **Conclusion**:
- Since both the assertion and reason are true, but the reason does not explain the assertion, the correct conclusion is:
- Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

### Final Answer:
- The correct option is: Both assertion and reason are true, but reason is not the correct explanation of the assertion.

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