Arrangement of sepals and petals with respect to each other in the floral bud is called

Options

A. Vernation
B. Venation
C. Aestivation
D. Phyllotaxy

Answer

To solve the question regarding the arrangement of sepals and petals with respect to each other in the floral bud, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term that describes how sepals and petals are arranged in a floral bud.

2. **Identifying Key Terms**: The key terms in the question are "arrangement," "sepals," "petals," and "floral bud."

3. **Reviewing Possible Options**: The options provided in the question include various botanical terms. We need to identify which term specifically relates to the arrangement of sepals and petals.

4. **Eliminating Incorrect Options**:
- **Venation**: This term refers to the arrangement of veins in leaves, not related to sepals and petals.
- **Phyllotaxy**: This term refers to the arrangement of leaves on a stem, which is also not relevant to the arrangement of sepals and petals.

5. **Identifying the Correct Term**: The term that specifically refers to the arrangement of sepals and petals in a floral bud is **Estivation**.

6. **Understanding Estivation**: Estivation can be categorized into different types:
- **Valvate**: Petals do not overlap.
- **Twisted**: Petals overlap each other regularly.
- **Imbricate**: Irregular overlapping of petals.
- **Vexillary**: One standard petal, two lateral petals, and a keel.

7. **Conclusion**: Based on the analysis, the correct answer to the question is **Estivation**.

### Final Answer:
The arrangement of sepals and petals with respect to each other in the floral bud is called **Estivation**.

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