Rhizogenesis is due to

Options

A. More auxin than cytokinin
B. Gibberellin
C. More cytokinin than auxin
D. Abscisic acid

Answer

### Step-by-Step Solution:

1. **Understanding Rhizogenesis**:
- Rhizogenesis refers to the process of root formation in plants. The term "rhizo" means roots, and "genesis" means growth or development.

2. **Role of Plant Hormones**:
- Plant hormones are crucial for regulating growth and developmental processes in plants. The main hormones involved in root and shoot development are auxins and cytokinins.

3. **Auxins and Cytokinins**:
- Auxins are responsible for cell elongation and growth, while cytokinins promote cell division and differentiation. Both hormones are essential for proper plant development.

4. **Combination of Hormones**:
- In plant tissue culture, a specific combination of auxins and cytokinins is used to promote growth. For rhizogenesis, a higher concentration of auxins is required compared to cytokinins.

5. **Conclusion**:
- Given the options, rhizogenesis is primarily due to a higher concentration of auxins than cytokinins. Therefore, the correct answer is **more auxins than cytokinins**.

### Final Answer:
- **Rhizogenesis is due to more auxins than cytokinins.**

---