The function of pollen tube is

Options

A. To support nucellus development
B. To carry tube nuclei for nutrition
C. To carry sperm
D. It is vestigial organ

Answer

### Step-by-Step Solution:

1. **Understanding Pollen Tube Formation**:
- The pollen tube is formed when a pollen grain lands on the stigma of a flower. This process is initiated by the germination of the pollen grain.

2. **Chemotactic Movement**:
- The growth of the pollen tube is influenced by chemotactic signals from the ovule, which guide the tube through the style towards the ovary.

3. **Pathway to the Ovule**:
- The pollen tube travels through the style, which connects the stigma to the ovary, where the ovules are located.

4. **Function of the Pollen Tube**:
- The primary function of the pollen tube is to deliver male gametes (sperm cells) to the ovule for fertilization. The pollen tube carries two male germ cells.

5. **Conclusion**:
- Therefore, the correct answer to the question regarding the function of the pollen tube is that it carries sperm to the ovum for fertilization.