Rose plants produce large, attractive bisexual flowers, but they seldom produce fruits. On the other hand a tomato plant produces plenty of fruits though they have small flowers. Analyse the reasons for failure of fruit formation in rose.

Explanation

**Step-by-Step Text Solution:**

1. **Introduction to the Problem:**
- The question compares rose plants and tomato plants regarding their flowering and fruiting capabilities. While roses produce large, attractive bisexual flowers, they seldom produce fruits. In contrast, tomato plants have small flowers but produce plenty of fruits.

2. **Reason 1: Viability of Pollen Grains**
- One possible reason for the failure of fruit formation in roses is that the pollen grains may not be viable. If the pollen grains are not capable of fertilizing the ovules, then fertilization cannot occur, leading to a lack of fruit development.

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