The phenomenon which prevents precocious reproductive development late in growing season and enables the plant to have sufficient times to reach maturity, is :-

Options

A. Photoperiodism
B. Vernalisation
C. Senescence
D. Abscission

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a phenomenon that prevents early reproductive development in plants during the late growing season, allowing them enough time to mature.

2. **Identifying Key Terms**: The key terms in the question are "precocious reproductive development," "late in growing season," and "sufficient time to reach maturity."

3. **Analyzing the Options**:
- **Photoperiodism**: This refers to how plants respond to the length of day and night, influencing flowering and other growth processes based on seasonal changes. It does not specifically prevent early reproduction.
- **Vernalization**: This is the process that allows plants to undergo a period of cold to trigger flowering after a certain time, preventing premature reproductive development and ensuring that plants mature properly.
- **Innocence**: This term does not relate to plant physiology in the context of reproductive development.
- **Abscission**: This refers to the natural detachment of parts of a plant, such as leaves or fruits, and is unrelated to the timing of reproductive development.

4. **Selecting the Correct Answer**: Based on the analysis, the correct answer is **Vernalization**, as it specifically prevents early reproduction and allows plants to mature properly.

5. **Conclusion**: The phenomenon that prevents precocious reproductive development late in the growing season and enables the plant to have sufficient time to reach maturity is **Vernalization**.

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