Cell division in plants is promoted by:

Options

A. Abscisic acid
B. Gibberellin
C. Ethylene
D. Cytokinin

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks which phytohormone promotes cell division in plants. Phytohormones are chemical substances that regulate various physiological processes in plants.

2. **Analyze the Options**:
- **Option 1: Abscisic Acid**: This hormone is primarily involved in promoting leaf senescence (aging) and stress responses, not cell division. Therefore, this option is incorrect.

- **Option 2: Gibberellins**: Gibberellins are known for their role in seed germination and promoting stem elongation. They do not primarily promote cell division, making this option incorrect as well.

- **Option 3: Ethylene**: Ethylene is a hormone that promotes fruit ripening and is involved in various developmental processes, but it does not stimulate cell division. Thus, this option is also incorrect.

- **Option 4: Cytokinins**: Cytokinins are a class of phytohormones that are known to promote cell division and growth in plant tissues. They play a crucial role in the regulation of cell division in the shoot and root meristems, making this the correct answer.

3. **Conclusion**: The correct answer to the question is **Cytokinins**, as they are the phytohormones that stimulate cell division in plants.

**Final Answer**: Cell division in plants is promoted by **Cytokinins**.

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