Stimulus in Mimosa pudica travels in the form of

Options

A. Auxin
B. Hormone
C. Alcohol
D. None of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Plant Movement**: Mimosa pudica is known for its rapid movement in response to touch, which is a type of thigmonasty. This movement involves the folding of leaves and drooping of leaflets.

2. **Identifying the Stimulus**: The stimulus in this case is the mechanical touch or pressure applied to the plant.

3. **Action Potential**: When the plant is touched, it generates an action potential. This is an electrical signal that travels through the plant tissues.

4. **Role of Signaling Molecules**: The action potential triggers the release of signaling molecules. These molecules are responsible for transmitting the signal throughout the plant.

5. **Hormonal Involvement**: Among the signaling molecules, hormones play a crucial role. In Mimosa pudica, the hormone involved is ethylene. Ethylene is known to regulate various plant responses, including movement.

6. **Conclusion**: Therefore, the correct answer to the question is that the stimulus in Mimosa pudica travels in the form of hormones, specifically ethylene.

**Final Answer**: The stimulus in Mimosa pudica travels in the form of hormones.

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