When calyx is shed with the opening of floral bud , it is known as

Options

A. Caducous
B. Deciduous
C. Temporary
D. Permanent

Answer

To solve the question "When calyx is shed with the opening of floral bud, it is known as," we need to understand the terms related to the calyx and its behavior during the flowering process.

### Step-by-Step Solution:

1. **Understanding the Calyx**: The calyx is the outermost whorl of a flower, typically consisting of green leaf-like structures called sepals. It protects the flower bud before it opens.

2. **Calyx Duration**: The calyx can be classified based on how long it remains attached to the flower. This classification helps us understand its behavior during the flowering process.

3. **Identifying the Terms**:
- **Caducus**: This term refers to a calyx that falls off before the flower fully opens. In this case, the sepals are shed early.
- **Deciduous**: This term generally refers to parts that fall off at maturity but is not specifically used for the calyx in this context.
- **Temporary**: This term does not specifically relate to the calyx's behavior in flowering.
- **Permanent**: This indicates that the calyx remains attached throughout the flowering process and does not shed.

4. **Conclusion**: Since the question specifies that the calyx is shed with the opening of the floral bud, the correct term is "caducus." This means the sepals fall off before the flower is fully open.

5. **Final Answer**: The correct answer is **Option A: Caducus**.