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 flowers when exposed to long dark periods (16 hours of dark), as indicated by its failure to flower under short dark periods (8 hours of dark) and its flowering when exposed to 16 hours of dark.

Cocklebur Will Not Flower If Exposed to 8 Hours of Dark