Cleavage in the egg of Ascaris is

Options

A. holoblastic and determinate type
B. holoblastic and indeterminate type
C. discoidal
D. superficial

Answer

### Step-by-Step Solution:

1. **Understanding Cleavage**: Cleavage refers to the series of rapid cell divisions that occur after fertilization. The type of cleavage is influenced by the amount and distribution of yolk in the egg.

2. **Types of Cleavage**: There are two main types of cleavage:
- **Holoblastic Cleavage**: This type occurs in eggs with little yolk. The entire egg divides completely into separate cells (blastomeres).
- **Meroblastic Cleavage**: This occurs in eggs with a lot of yolk, where only a part of the egg divides. It is further divided into:
- **Discoidal Cleavage**: Limited to a small disc of cytoplasm at one pole of the egg.
- **Superficial Cleavage**: Occurs in the outer layer of the egg while the yolk remains undivided.

3. **Cleavage in Ascaris**: Ascaris is a type of roundworm. The cleavage pattern in Ascaris is characterized as:
- **Holoblastic**: The entire egg divides completely at each cleavage stage.
- **Determinate Type**: This means that the fate of the cells is determined early in the cleavage process, leading to specific cell types.

4. **Conclusion**: Therefore, the cleavage in the egg of Ascaris is classified as **holoblastic and determinate type**.

### Final Answer:
The cleavage in the egg of Ascaris is **holoblastic and determinate type**.

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