The function of caruncle is to

Options

A. Protect the radicle end of embryo
B. Check entry of pathogens through mecropyle
C. Protect against mechanical injury
D. Absorb water and its inward transfer through micropyle

Answer

### Step-by-Step Solution:

1. **Understanding the Caruncle**:
- The caruncle is an outgrowth found at the end of the micropyle in seeds. It is typically a spongy, white, bilobed structure.

2. **Functions of the Caruncle**:
- The caruncle has several functions, but we need to identify the most relevant one from the options provided.

3. **Evaluating the Options**:
- **Option 1: Protect the radical and of embryo** - This is incorrect as the caruncle does not serve this protective function.
- **Option 2: Check embryo pathogen through micropyle** - This option is also incorrect; the caruncle does not primarily function to prevent pathogens.
- **Option 3: Protect against mechanical injury** - This is not a primary function of the caruncle.
- **Option 4: Absorb water and its inward transfer through micropyle** - This is the correct function of the caruncle. It helps in the absorption of water and facilitates its movement into the seed through the micropyle.

4. **Conclusion**:
- Based on the evaluation of the options, the correct answer is **Option 4: Absorb water and its inward transfer through micropyle**.