Decapitation i.e. removal of shoot tips in a plant usually results in

Options

A. inactivation of lateral buds
B. growth of lateral buds
C. cessation of plant growth
D. yellowing of leaves.

Answer

### Step-by-Step Solution:

1. **Understanding Decapitation**: Decapitation refers to the removal of the shoot tips (apical buds) of a plant. This process is significant in understanding how plant growth is regulated.

2. **Concept of Apical Dominance**: Apical dominance is a phenomenon where the presence of the apical bud inhibits the growth of lateral buds. This inhibition occurs because the apical bud produces hormones called auxins that suppress the growth of nearby lateral buds.

3. **Effect of Decapitation**: When the apical bud is removed (decapitated), the source of auxins is eliminated. As a result, the inhibition on lateral buds is lifted.

4. **Growth of Lateral Buds**: With the removal of the apical bud and the consequent decrease in auxin levels, the lateral buds that were previously dormant begin to grow. This leads to branching in the plant.

5. **Evaluating Options**:
- **Option A**: Inactivation of lateral buds - This is incorrect because decapitation actually promotes the growth of lateral buds.
- **Option B**: Growth of lateral buds - This is correct as the removal of the apical bud allows lateral buds to sprout.
- **Option C**: Cessation of plant growth - This is incorrect; the plant continues to grow, but in a different manner.
- **Option D**: Yellowing of leaves - This is also incorrect and unrelated to the process of decapitation.

6. **Conclusion**: The correct answer is that decapitation usually results in the growth of lateral buds.

### Final Answer:
Decapitation (removal of shoot tips) in a plant usually results in the **growth of lateral buds**.

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