Auxins promote

Options

A. Apical dominance
B. Cambial acitivity
C. Cell growth
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Auxins**: Auxins are a class of plant hormones that play a crucial role in regulating various aspects of plant growth and development.

2. **Location of Auxin Production**: Auxins are primarily produced in the tips of the plant, particularly in the apical meristem, which is the growing tip of the stem.

3. **Function of Auxins**: One of the key functions of auxins is to promote apical dominance. This means that the main central stem of the plant grows more vigorously than the lateral branches.

4. **Apical Dominance Explained**: Apical dominance is a phenomenon where the growth of the main stem is prioritized over the growth of lateral branches. This is important for the plant's vertical growth and overall structure.

5. **Role of Cytokinins**: While auxins promote apical dominance, another hormone called cytokinins is responsible for breaking this dominance, allowing lateral branches to grow.

6. **Conclusion**: Given the options provided, auxins promote apical dominance, and since this is a specific function of auxins, the correct answer to the question is "apical dominance."

**Final Answer**: Auxins promote apical dominance.

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