Division of human egg is :

Options

A. Equal holoblastic
B. Unequal holoblastic
C. Superficial meroblastic
D. Discoidal meroblastic

Answer

**Step-by-Step Solution:**

1. **Understanding Egg Division Types**: The question asks about the type of division that occurs in human eggs. There are different types of egg division, and they can be categorized based on how the cytoplasm is divided during the cleavage stage.

2. **Holoblastic vs. Meroblastic**:
- **Holoblastic Division**: This type of division occurs when the entire egg divides completely. It can be further classified into:
- **Equal Holoblastic**: The cleavage results in two equal-sized cells.
- **Unequal Holoblastic**: The cleavage results in two cells that are not equal in size.
- **Meroblastic Division**: This type of division occurs when only a part of the egg divides due to the presence of a large amount of yolk. It can be classified into:
- **Superficial Meroblastic**: Division occurs at the surface of the egg.
- **Discoidal Meroblastic**: Division occurs in a disc-shaped area of the egg.

3. **Applying the Knowledge to Human Eggs**: In humans, which are mammals, the type of egg division that occurs is holoblastic. Specifically, it is equal holoblastic division because the cleavage results in two equal-sized cells.

4. **Conclusion**: Based on the definitions and characteristics of the types of egg division, the correct answer to the question "Division of human egg is:" is **equal holoblastic**.

**Final Answer**: Equal Holoblastic

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