Fertilizins are present over

Options

A. Immature eggs
B. Mature eggs
C. Sperms
D. Polar bodies.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Fertilizin":** Fertilizin is a glycoprotein that plays a crucial role in the fertilization process. It is specifically involved in the interaction between sperm and egg.

2. **Identifying the Source of Fertilizin:** Fertilizin is produced by mature eggs. This is important because it indicates that the presence of fertilizin is associated with the eggs that are ready for fertilization.

3. **Analyzing the Options Provided:**
- **A. Immature eggs:** These are not yet ready for fertilization and do not produce fertilizin.
- **B. Mature eggs:** These are the correct answer as they produce fertilizin and have it present on their surface.
- **C. Sperms:** While sperm interact with fertilizin, they do not produce it.
- **D. Polar bodies:** These are by-products of oocyte division and do not play a role in fertilization or produce fertilizin.

4. **Conclusion:** Based on the understanding that fertilizin is produced by mature eggs and is present on their surface, the correct answer is option B.

**Final Answer:** B. Mature eggs

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