C s is a long-day plant that normally flowers in the spring Which of the followi

Question

C s is a long-day plant that normally flowers in the spring Which of the following regimens would be the most effective in making an iris bloom in late fall? A. interrupting the plants' nights at 2:00 A.M. with a flash of far-red light B. interrupting the plants' nights at 2:00 A.M. with a flash of red light followed by a flash of far-red light C. interrupting the plants' nights at 2:00 A.M. with a red flash, then a far-red flash, then a red flash D. interrupting the plants' days at 2:00 P.M. by putting them in the dark E. interrupting the plants' days at 2:00 P.M. with a flash of red light

Explanation / Answer

correct option is C.Because intruption by red light induces flowering and flash of far red light reverse the effect of red light and then again intrupting by red light causes flowering in iris plant

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