[A]: Pollination is essential for fertilization.
[R]: Abscission or drooping of ovary is prevented by pollination.

Options

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

Answer

To solve the question, we need to analyze the assertion (A) and the reason (R) provided:

**Assertion (A):** Pollination is essential for fertilization.
**Reason (R):** Abscission or drooping of ovary is prevented by pollination.

### Step-by-Step Solution:

1. **Understanding Pollination:**
- Pollination is the process of transferring pollen grains from the male part of the flower (anther) to the female part (stigma).
- It is a crucial pre-fertilization event that enables fertilization to occur.

2. **Evaluating Assertion (A):**
- Since pollination is necessary for the transfer of male gametes (sperm) to the female gametes (egg), we conclude that assertion A is **true**.

3. **Understanding Abscission and Drooping of Ovary:**
- Abscission refers to the process where a plant sheds its parts, such as leaves or fruits.
- The drooping of the ovary occurs when the ovary does not develop into a fruit after fertilization.
- The prevention of drooping typically happens after fertilization when the ovary develops into a fruit.

4. **Evaluating Reason (R):**
- The reason states that pollination prevents the drooping of the ovary. However, this is misleading because the prevention of drooping is a result of fertilization, not pollination.
- Therefore, reason R is **false**.

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

### Final Answer:
- The correct option is: **A is true and R is false.**

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