Q. With respect to photoperiodism, these are long day plants.
A) Wheat, oat, soybean
B) Wheat, Xanthium, paddy
C) Wheat, poppy, soybean
D) Wheat, poppy, beet
Explanation
The long day plants fail to flower, if the day length is shorter than the critical period, e.g., sugarbeet, wheat, poppy, radish, maize, spinach, etc.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.