Rate of respiration shall

Options

A. Increase with rise in temperature
B. Decrease in the presence of light
C. Increase in winter
D. No change with season and environmental conditions

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the rate of respiration in relation to various environmental conditions, particularly temperature.

2. **Analyzing the Options**:
- **Option A**: Increase with rise in temperature
- **Option B**: Decrease in the presence of light
- **Option C**: Increase in winter
- **Option D**: No change with season and environmental condition

3. **Evaluating Option A**:
- It is known that respiration rates generally increase with temperature due to enhanced metabolic activity. However, this is true only up to a certain limit.

4. **Identifying the Temperature Threshold**:
- The transcript mentions that respiration increases with temperature but can decrease if the temperature exceeds 33 degrees Celsius. At temperatures above 20 degrees Celsius, the protoplasm changes, potentially leading to decreased respiration rates due to limited oxygen solubility and diffusion.

5. **Evaluating Option B**:
- The presence of light generally affects photosynthesis rather than respiration directly. Therefore, this option is less likely to be correct.

6. **Evaluating Option C**:
- In winter, temperatures are typically lower, which would likely lead to a decrease in respiration rates rather than an increase.

7. **Evaluating Option D**:
- This option suggests that respiration rates remain unchanged regardless of environmental conditions, which contradicts the known relationship between temperature and respiration.

8. **Conclusion**:
- Based on the analysis, the most accurate statement is that the rate of respiration increases with a rise in temperature, but it is important to consider the limits beyond which respiration may decrease.

### Final Answer:
The correct answer is **Option A: Increase with rise in temperature**.

---