In Commellina, cleistogamy is found in:

Options

A. Aerial flowers
B. Underground flowers
C. Both (1) and (2)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Plant**: Commellina, commonly known as the dayflower, is a plant that can produce two types of flowers: chasmogamous and cleistogamous.

2. **Defining Cleistogamy**: Cleistogamous flowers are those that remain closed and do not open. This means that the reproductive structures (stamens and pistils) are enclosed within the petals, preventing cross-pollination.

3. **Identifying Flower Types**: In Commellina, chasmogamous flowers are found above ground, which are open and allow for pollination by insects. In contrast, cleistogamous flowers are produced underground and remain closed.

4. **Locating Cleistogamous Flowers**: The question specifically asks where cleistogamy is found in Commellina. Based on the information, cleistogamous flowers are located underground.

5. **Evaluating Options**:
- Option A (Aerial flowers) is incorrect because aerial flowers are chasmogamous.
- Option B (Underground flowers) is correct as cleistogamous flowers are found underground.
- Option C (Both 1 and 2) is incorrect since only underground flowers are cleistogamous.
- Option D (None of these) is also incorrect.

6. **Conclusion**: The correct answer is Option B - cleistogamous flowers are found in the underground part of the Commellina plant.

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