Which one of the following statement about human sperm is correct ?

Options

A. Acrosome serves no particular function
B. Acrosome has a conical pointed structure used for mechanically piercing and penetrating the egg, resulting in fertilisation
C. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
D. Acrosome serves as sensory structure leading the sperm towards to ovum

Answer

To determine which statement about human sperm is correct, we will analyze each option related to the acrosome, a structure found on the head of the sperm.

1. **Understanding the Acrosome**: The acrosome is a cap-like structure that covers the anterior half of the sperm's head. It contains enzymes that are crucial for fertilization.

2. **Analyzing the Statements**:
- **Option A**: "Acrosome serves no particular function."
- This statement is incorrect. The acrosome has a significant role in fertilization.

- **Option B**: "Acrosome has a conical pointed structure used for mechanically piercing and penetrating the egg resulting in fertilization."
- This statement is also incorrect. While the acrosome does aid in penetrating the egg, it does not have a conical pointed structure for mechanical piercing.

- **Option C**: "The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization."
- This statement is correct. The acrosome contains enzymes (like hyaluronidase) that help dissolve the protective layers surrounding the egg, allowing the sperm to penetrate and fertilize it.

- **Option D**: "Acrosome serves as a sensory structure leading the sperm towards the ovum."
- This statement is incorrect. The movement of sperm towards the ovum is guided by chemical signals, not by the acrosome acting as a sensory structure.

3. **Conclusion**: After analyzing all the statements, the correct answer is **Option C**: "The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization."