Which of the following is correct about vernalization ?

Options

A. Flowering is only quantitatively dependent on low temperature .
B. It stimulates precocious reproductive development
C. It is seen in the biennial plants
D. Both (A) and (C)

Answer

To solve the question regarding vernalization, we will analyze each option provided and determine which statement is correct.

### Step-by-Step Solution:

1. **Understanding Vernalization**:
- Vernalization is the process by which certain plants are induced to flower after being exposed to prolonged periods of cold temperatures. This process is crucial for the flowering of biennial plants, which typically require a cold period to trigger their reproductive phase.

2. **Analyzing the Options**:
- **Option A**: "Flowering is only quantitatively dependent on the lower temperature."
- This statement is incorrect. While lower temperatures are essential for vernalization, flowering can also be influenced by other factors such as light, water, and nutrients. Thus, it is not solely dependent on low temperatures.

- **Option B**: "Stimulate precocious reproductive development."
- This statement is misleading. Vernalization does not stimulate precocious (early) reproductive development; rather, it prepares the plant for flowering after a cold period. Therefore, this option is also incorrect.

- **Option C**: "It is seen in biennial plants."
- This statement is correct. Vernalization is primarily observed in biennial plants, such as sugar beet and carrot, which require a cold period to flower in their second year of growth.

- **Option D**: "Both A and C are correct."
- Since Option A is incorrect, this option cannot be correct either.

3. **Conclusion**:
- The only correct statement regarding vernalization is **Option C**: "It is seen in biennial plants."

### Final Answer:
**C. It is seen in biennial plants.**

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