Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light.It will flower if exposed to 16 hours of dark and 8 hours of light.However,if the 16 hours of dark is interrupted with a brief period of light the cocklebur will not flower.Which of the following will trigger cocklebur to flower?

Question

Quizplus · Accepted Answer

Cocklebur will flower if exposed to 16 hours of dark and 8 hours of light. Therefore, the best choice is long dark periods, which matches the conditions required for flowering. Short dark periods and short light periods will not trigger flowering, and long light periods will inhibit flowering.

Cocklebur Will Not Flower If Exposed to 8 Hours of Dark