Choose the correct option w.r.t. optimum temperature required for photosynthesis

Options

A. wheat - 30°C to 40 °C
B. rice 30° - 45°C centigrade
C. Sorghum 20°-25°C
D. Maize- 30° -45° C

Answer

To solve the question regarding the optimum temperature required for photosynthesis in different crops, we will analyze each option provided and determine which one has the correct temperature range for optimal photosynthesis.

### Step-by-Step Solution:

1. **Understand the Concept of Optimum Temperature for Photosynthesis**:
- Photosynthesis involves light reactions and dark reactions (Calvin cycle), which are enzymatic processes.
- Each enzyme has a specific temperature range where it functions optimally. If the temperature is too high or too low, enzymes can denature, affecting the rate of photosynthesis.

2. **Analyze Each Crop Option**:
- **Wheat**:
- Optimum temperature range is typically between 20°C to 30°C.
- Higher temperatures can damage the plant and inhibit photosynthesis.
- **Conclusion**: Not the correct option.

- **Rice**:
- Optimum temperature range is approximately 30°C to 45°C.
- Rice thrives in hot and humid climates and can survive at higher temperatures.
- **Conclusion**: This is a potential correct option.

- **Sorghum**:
- Optimum temperature range is around 20°C to 25°C.
- Sorghum is a high-temperature crop but does not thrive at temperatures above 34°C.
- **Conclusion**: Not the correct option.

- **Maize**:
- Optimum temperature range is generally around 30°C to 45°C.
- However, for photosynthesis, it is more effective at temperatures around 23°C or higher.
- **Conclusion**: Not the correct option.

3. **Identify the Correct Answer**:
- Based on the analysis, the crop that has the optimum temperature range for photosynthesis in the given options is **Rice** (30°C to 45°C).

### Final Answer:
The correct option with respect to the optimum temperature required for photosynthesis is **Rice**.

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