Which of the following is correct about flowering in rice and wheat plants ?

Options

A. Rice needs a continuous uninterrupted long period of light to flower while wheat needs a continuous uninterrupted long period of darkness to flower
B. Wheat needs a continuous uninterrupted long period of light to flower while rice needs a continuous uninterrupted long period of darkness to flower
C. Both rice and wheat need a continuous uninterrupted long period of light to flower
D. Both rice and wheat need a continuous uninterrupted long period of darkness to flower

Answer

To solve the question regarding flowering in rice and wheat plants, we will analyze the characteristics of each plant in relation to photoperiodism.

### Step-by-Step Solution:

1. **Understanding Photoperiodism**:
- Photoperiodism is the response of plants to the relative lengths of light and dark periods. It influences flowering in many plant species.

2. **Identifying Plant Types**:
- **Short Day Plants**: These plants require a longer duration of darkness to flower. They typically flower when the day length is shorter than a certain critical length.
- **Long Day Plants**: These plants require a longer duration of light to flower. They typically flower when the day length exceeds a certain critical length.
- **Day Neutral Plants**: These plants do not depend on the length of day or night for flowering.

3. **Characteristics of Rice and Wheat**:
- **Rice**: Rice is classified as a short day plant. This means it requires longer periods of darkness and shorter periods of light to initiate flowering.
- **Wheat**: Wheat is classified as a long day plant. It requires longer periods of light for flowering.

4. **Evaluating the Statements**:
- If the options provided state that rice needs a long period of light, that would be incorrect because rice is a short day plant.
- If the options state that wheat requires a long period of light, that would be correct since wheat is a long day plant.

5. **Conclusion**:
- Based on the understanding of photoperiodism, the correct statement regarding flowering in rice and wheat is that rice is a short day plant requiring longer periods of darkness, while wheat is a long day plant requiring longer periods of light.

### Final Answer:
The correct statement about flowering in rice and wheat plants is that rice is a short day plant and wheat is a long day plant.

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