Select correct statement w.r.t. florigen.

Options

A. It is formed in leaves and shoot apices
B. When exposed to the inductive photoperiod florigen migrates from leaves to shoot apex
C. Initial flowering occurs without migration of florigen to the shoot apex
D. It is not a plant hormone

Answer

To solve the question regarding florigen, we need to analyze the statements provided and determine which one is correct based on our understanding of florigen and its role in the flowering process of plants.

### Step-by-Step Solution:

1. **Understanding Florigen**: Florigen is a hypothetical plant hormone that is believed to be responsible for the induction of flowering in plants. It is produced in response to specific light conditions.

2. **Photoperiodic Response**: Plants can be classified based on their response to photoperiods:
- **Long Day Plants**: Require a longer duration of light than a critical length to induce flowering.
- **Short Day Plants**: Require a shorter duration of light than a critical length (also known as long night plants).
- **Day Neutral Plants**: Flower regardless of light duration.

3. **Formation and Migration of Florigen**:
- Florigen is formed in the leaves of the plant when they are exposed to the appropriate inductive photoperiod.
- Once formed, florigen migrates from the leaves to the shoot apices, where it induces flowering.

4. **Analyzing the Statements**:
- **Statement 1**: "Florigen is formed in the shoot apices." - This is incorrect because florigen is formed in the leaves, not the shoot apices.
- **Statement 2**: "When exposed to the inductive photoperiod, florigen migrates from leaves to the shoot apex." - This is correct as it accurately describes the process of florigen migration.
- **Statement 3**: "Initial flowering occurs without migration of florigen to the shoot apices." - This is incorrect because the migration of florigen to the shoot apices is essential for flowering to occur.
- **Statement 4**: "Florigen is not a plant hormone." - This is misleading as florigen is considered a hypothetical plant hormone involved in flowering.

5. **Conclusion**: The only correct statement regarding florigen is Statement 2. Therefore, the answer to the question is that the correct statement with respect to florigen is that it migrates from leaves to the shoot apex when exposed to the inductive photoperiod.

### Final Answer:
**The correct statement with respect to florigen is: "When exposed to the inductive photoperiod, florigen migrates from leaves to the shoot apex."**