A) Wheat, oat and soyabean
B) Wheat, Xanthium and paddy
C) Wheat, poppy and soyabean
D) Wheat poppy and beat
Correct Answer: A
Solution :
The long day plants fail to flower, if the day length is shorter than the critical period, e.g., sugar beet, wheat, poppy, radish, maize, spinach, etc.
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