If the stem grows towards sunlight and root grows just opposite to it, the stem movement is called

Options

A. negative phototropic movement
B. phototropic movement
C. positive phototropic movement
D. positive geotropic movement

Answer

To answer the question, "If the stem grows towards sunlight and root grows just opposite to it, the stem movement is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Plant Growth Responses**:
- Plants exhibit growth responses to various environmental stimuli, including light and gravity. These responses are termed tropisms.

2. **Identifying the Type of Stimulus**:
- In this scenario, the stimulus is sunlight. The plant's growth in response to light is known as phototropism.

3. **Differentiating Between Positive and Negative Phototropism**:
- Phototropism can be classified into two types:
- **Positive Phototropism**: Growth towards the light source.
- **Negative Phototropism**: Growth away from the light source.

4. **Analyzing the Given Scenario**:
- The stem of the plant is growing towards the sunlight, which indicates that it is exhibiting positive phototropism.
- Conversely, the roots are growing away from the light, which is indicative of negative phototropism.

5. **Conclusion**:
- Since the stem is growing towards the light, the correct term for this movement is **positive phototropic movement**.

### Final Answer:
The stem movement is called **positive phototropic movement**.

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