What do you understand by apical dominance?

Explanation

### Step-by-Step Solution:

1. **Definition of Apical Dominance**: Apical dominance is a phenomenon in plants where the growth of the apical (top) bud suppresses the growth of nearby lateral (side) buds. This means that when the apical bud is present, it inhibits the development of buds located on the sides of the stem.

2. **Mechanism of Apical Dominance**: The suppression of lateral bud growth is primarily due to the production of certain hormones by the apical bud. The most significant hormone involved in this process is auxin.

3. **Role of Auxin**: Auxin is a plant hormone that is secreted by the apical bud. It plays a crucial role in regulating plant growth and development. When auxin is produced in the apical bud, it travels down the stem and inhibits the growth of lateral buds.

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