Morphogenesis is controlled by an interaction between

Options

A. auxins and gibberellins
B. auxins and cytokinins
C. gibberellins and cytokinins
D. none of the above

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Morphogenesis:**
- Morphogenesis refers to the biological process that causes cells, tissues, or organisms to develop their shape. The term "morpho" means shape, and "genesis" means creation.

2. **Role of Hormones in Morphogenesis:**
- Morphogenesis is controlled by the interaction of specific plant hormones. The two primary hormones involved in this process are auxins and cytokinins.

3. **Function of Auxins:**
- Auxins are produced at the apical bud (the growing tip of the plant). They play a crucial role in inhibiting the development of lateral buds. This inhibition is important because it prevents lateral buds from competing with the apical bud for light and nutrients.

4. **Function of Cytokinins:**
- Cytokinins promote morphogenesis, particularly in the initiation and development of shoots. They stimulate the formation of new tissues in the plant.

5. **Interaction Between Auxins and Cytokinins:**
- The balance between auxins and cytokinins is vital for plant development:
- If the level of cytokinins increases and auxins decrease, it promotes shoot formation.
- Conversely, if auxins increase and cytokinins decrease, it encourages root development.

6. **Conclusion:**
- Therefore, morphogenesis is controlled by the interaction between auxins and cytokinins. This aligns with option two from the question.

**Final Answer:**
Morphogenesis is controlled by an interaction between auxins and cytokinins.

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