Assertion : All organisms reproduce for perpetuation of a population.
Reason : Reproduction is an all inclusive characteristic of living organisms.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "All organisms reproduce for perpetuation of a population." This means that the primary purpose of reproduction in organisms is to ensure the continuation of their species or population over time.

2. **Understanding the Reason**: The reason provided is that "Reproduction is an all-inclusive characteristic of living organisms." This implies that reproduction is a fundamental trait that applies to all living beings.

3. **Evaluating the Assertion**: The assertion is true because reproduction is indeed essential for the survival of species. It allows for the generation of new individuals, ensuring that the population persists even as individual organisms die.

4. **Evaluating the Reason**: The reason is false because not all living organisms reproduce. For example, certain organisms like mules (which are hybrids) are typically sterile and cannot reproduce. Additionally, some organisms may reproduce asexually, where growth and reproduction can be synonymous, but this does not apply universally to all living organisms.

5. **Conclusion**: Since the assertion is true and the reason is false, the correct answer is that the assertion is true but the reason is false.

### Final Answer:
- Assertion is true but reason is false.