Moderate
The optimum temperature for seedling growth in the upper gangetic plains is around:
Correct answer: C. 20? - 25?C
- A. 10? - 15?C
- B. 5? - 10?C
- C. 20? - 25?C
- D. 30? - 40?C
Explanation
In the upper Gangetic plains, seedling growth is generally best at a moderate temperature of about 20–25°C. Temperatures below 15°C slow physiological activity, while 30–40°C may cause heat stress.
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