Bolting does not require

Options

A. Short days
B. Long days
C. Internode elongation in rosette plants
D. Cold nights.

Answer

**Step-by-Step Solution:**

1. **Understanding Bolting**: Bolting refers to the rapid elongation of the stem and internodes in certain plants, particularly rosette plants. This process is crucial for flowering and seed production.

2. **Identifying the Options**: The options provided are:
- A) Short days
- B) Long days
- C) Internode elongation in rosette plants
- D) Cold nights

3. **Analyzing Each Option**:
- **Option A (Short days)**: Bolting typically occurs in long-day conditions. Therefore, short days are not conducive to bolting.
- **Option B (Long days)**: Long days are known to promote bolting in many plants, making this option necessary for the process.
- **Option C (Internode elongation in rosette plants)**: Internode elongation is a key component of the bolting process, so this option is required.
- **Option D (Cold nights)**: Cold nights can also promote bolting in some species, particularly when combined with long days.

4. **Conclusion**: Since bolting does not require short days, the correct answer is Option A.

**Final Answer**: Bolting does not require short days (Option A).

---