The phenmenon 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. **Identify the Options**: The options provided are Vernalization, Photoperiodism, Cryopreservation, and Cryostat.

2. **Define Vernalization**: Vernalization is the process by which flowering is induced in plants by exposing them to prolonged cold or low temperatures. This treatment is essential for certain plants to transition from the vegetative stage to the flowering stage.

3. **Analyze Photoperiodism**: Photoperiodism refers to the response of plants to the lengths of day and night. It is not directly related to temperature but rather to the duration of light exposure. Therefore, this option is incorrect for the question.

4. **Consider Cryopreservation**: Cryopreservation involves the storage of biological materials (like cells and tissues) at very low temperatures to preserve their viability. This process does not induce flowering, making this option incorrect.

5. **Evaluate Cryostat**: A cryostat is a device used to maintain low temperatures for various applications, but it is not a biological process related to flowering. Thus, this option is also incorrect.

6. **Conclusion**: Based on the definitions and analyses, the correct answer to the question is **Vernalization**, as it specifically refers to the induction of flowering through low temperature treatment.

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

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