Movement of leaves in touch me not plant is

Options

A. Thigmotropism
B. Nyctinasty
C. Thigmonasty
D. Seismonasty

Answer

To answer the question regarding the movement of leaves in the touch-me-not plant (Mimosa pudica), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Plant**: The touch-me-not plant is scientifically known as Mimosa pudica. It is commonly referred to as the sensitive plant or shame plant due to its unique response to touch.

2. **Understand Leaf Movement**: The leaves of the touch-me-not plant exhibit a specific type of movement in response to stimuli. This movement is characterized by the folding of leaves when they are touched.

3. **Classify the Movement**: The movement of the leaves in response to touch is classified as a gnastic movement. Gnastic movements are non-directional movements that occur in response to stimuli.

4. **Recognize the Type of Gnastic Movement**: The specific type of gnastic movement exhibited by the touch-me-not plant in response to touch is called thigmonasty (or cismonasty). Both terms are used interchangeably to describe this phenomenon.

5. **Eliminate Incorrect Options**:
- **Thigmotropism** refers to growth movements in response to touch, which is different from the non-directional movement of leaves.
- **Nicknesty** is not relevant as it refers to movements in response to light or darkness.
- **Thigmonasty** and **Cismonasty** are correct as they describe the same movement.

6. **Conclusion**: The correct answer to the question is that the movement of leaves in the touch-me-not plant is classified as thigmonasty (or cismonasty).

### Final Answer:
The movement of leaves in the touch-me-not plant is **thigmonasty** (or **cismonasty**).

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