In animals, cytokinesis is :-

Options

A. Centrifugal
B. Centripetal
C. Random
D. Collateral

Answer

**Step-by-Step Solution:**

1. **Understanding Cytokinesis in Animals:**
- Cytokinesis is the process that follows mitosis, where the cytoplasm of a parental cell is divided into two daughter cells. In animals, this process is characterized by the formation of a structure known as the cleavage furrow.

2. **Evaluating the Options:**
- **Option 1: Centrifugal**
- This option suggests that cytokinesis occurs from the outside towards the center. This is incorrect for animal cells, as they do not form a cell plate like plant cells do.
- **Option 2: Centripetal**
- This option indicates that cytokinesis occurs from the center towards the outside. This is correct for animal cells, as the cleavage furrow forms and deepens inwardly, dividing the cell into two.
- **Option 3: Random**
- This option implies that cytokinesis occurs in a random manner. This is incorrect, as cytokinesis follows a specific mechanism involving the cleavage furrow.
- **Option 4: Collateral**
- This option suggests another incorrect mechanism for cytokinesis in animals. It does not accurately describe the process.

3. **Conclusion:**
- The correct answer is **Option 2: Centripetal**, as cytokinesis in animals occurs through the inward formation of the cleavage furrow.