A chemical fertilisin is produced from

Options

A. polar bodies
B. middle piece of sperm
C. acrosome
D. mature eggs

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the origin of a chemical known as Fertilizin. We need to identify which part of the reproductive system produces this chemical.

2. **Identifying Fertilizin**: Fertilizin is described as a chemical that plays a role in the fertilization process. It is specifically mentioned that it is involved in the release of a mature egg during ovulation.

3. **Location of the Mature Egg**: After ovulation, the mature egg is located in the oviduct. This is where the egg awaits the arrival of sperm for fertilization.

4. **Role of Sperm**: When sperm reaches the oviduct, it releases a chemical known as antifertilizer. This chemical interacts with Fertilizin, similar to how antibodies interact with antigens.

5. **Identifying the Source of Fertilizin**: The question requires us to identify who produces Fertilizin. The options provided include polar bodies, middle piece of sperm, acrosome, and mature eggs.

6. **Analyzing the Options**:
- **Polar Bodies**: These are by-products of oocyte division and do not produce Fertilizin.
- **Middle Piece of Sperm**: This part of the sperm is involved in energy production and does not produce Fertilizin.
- **Acrosome**: This part of the sperm contains enzymes that help in penetrating the egg but does not produce Fertilizin.
- **Mature Eggs**: It is confirmed that mature eggs are responsible for releasing Fertilizin.

7. **Conclusion**: The correct answer is that Fertilizin is produced by mature eggs.

**Final Answer**: Fertilizin is produced by mature eggs.

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