Which plant hormone promotes cell divisions ?

Options

A. Auxin
B. Gibberellin
C. Cytokinin
D. Abscisic Acid

Explanation

To determine which plant hormone promotes cell divisions, we will analyze the given options: Auxin, Gibberellin, Cytokinin, and Abscisic Acid.

### Step-by-Step Solution:

1. **Understand Plant Hormones**:
- Plant hormones, also known as phytohormones, are chemical substances that regulate various physiological processes in plants. They are produced in low concentrations and play vital roles in growth and development.

**Hint**: Remember that plant hormones are crucial for plant growth and are produced in small amounts.

2. **Evaluate Auxin**:
- Auxins are known to promote cell elongation and are involved in processes like gravitropism (response to gravity) and phototropism (response to light). They also play a role in flowering and apical dominance.

**Hint**: Auxins are primarily associated with cell elongation rather than division.

3. **Evaluate Gibberellin**:
- Gibberellins are hormones that stimulate shoot elongation, flower maturation, and seed germination. They are involved in breaking seed dormancy but do not directly promote cell division.

**Hint**: Gibberellins are more focused on growth and maturation rather than division.

4. **Evaluate Cytokinin**:
- Cytokinins are known for promoting cytokinesis, which is the process of cell division. They are primarily found in areas of active growth, such as roots, fruits, and developing embryos. This makes them crucial for cell division.

**Hint**: Cytokinins are specifically linked to the process of cell division.

5. **Evaluate Abscisic Acid**:
- Abscisic Acid (ABA) is an inhibitory hormone that plays a role in processes like stomatal closure and seed dormancy. It does not promote cell division.

**Hint**: Abscisic Acid is more about inhibiting processes rather than promoting growth.

6. **Conclusion**:
- Based on the analysis, the hormone that promotes cell division is **Cytokinin**.

### Final Answer:
Cytokinin is the plant hormone that promotes cell divisions.