The phenomenon of induction of flowering upon low temperature treatment is known as?

Options

A. Vernalization
B. Photoperiodism
C. Cryopreservation
D. Cryostat

Answer

To solve the question regarding the phenomenon of induction of flowering upon low temperature treatment, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the specific term that describes the induction of flowering in plants when they are exposed to low temperatures.

2. **Identifying Key Terms**: The key terms in the question are "induction of flowering" and "low temperature treatment."

3. **Exploring Relevant Concepts**:
- **Vernalization**: This is a process where exposure to a prolonged period of cold temperatures promotes flowering in certain plants. It is a crucial mechanism for ensuring that flowering occurs at the right time in the growing season.
- **Photoperiodism**: This refers to the response of plants to the length of day and night, which influences flowering but is not directly related to low temperature.
- **Cryopreservation**: This is a technique used to preserve plant cells or tissues at very low temperatures, but it does not induce flowering.
- **Cryostat**: This is an instrument used to maintain low temperatures for cryopreservation, not related to flowering induction.

4. **Conclusion**: Based on the definitions and explanations of the terms, the correct answer to the question is **vernalization**.

### Final Answer:
The phenomenon of induction of flowering upon low temperature treatment is known as **vernalization**.

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