Meroblastic cleavage occur in egg

Options

A. Isolecithal
B. Microlecithal
C. Telocithal
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Meroblastic Cleavage**:
- Meroblastic cleavage is a type of cleavage that is characterized by incomplete division of the egg. This occurs in eggs that have a significant amount of yolk.

2. **Types of Eggs**:
- There are different types of eggs based on the distribution of yolk:
- **Isolecithal Eggs**: These have a small amount of evenly distributed yolk.
- **Mesolecithal Eggs**: These have a moderate amount of yolk, which is also somewhat evenly distributed but not as much as in telolecithal eggs.
- **Telolecithal Eggs**: These have a large amount of yolk concentrated at one end of the egg.

3. **Identifying Which Eggs Undergo Meroblastic Cleavage**:
- Since meroblastic cleavage involves incomplete cleavage due to the presence of a large yolk, it is primarily observed in telolecithal eggs.
- Isolecithal and mesolecithal eggs undergo holoblastic cleavage, where the entire egg divides completely.

4. **Conclusion**:
- Therefore, the correct answer to the question "Meroblastic cleavage occurs in eggs" is **Telolecithal eggs**.

**Final Answer**: Telolecithal eggs.

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