With respect to photoperiodism, these are long day plant

Options

A. Wheat, oat, soybean
B. Wheat, Xanthium, paddy
C. Wheat, poppy, soybean
D. Wheat, poppy, beet

Answer

D

Explanation

Those plants that flower when they receive long photoperiods or light hours which are above that critical period e.g. wheat, radish, sugar beet, poppy, henbane etc.