A botanist exposed two groups of the same plant species to two photoperiods, one with 14 hours of light and 10 hours of dark and the other with 10 hours of light and 14 hours of dark. Under the first set of conditions, the plants flowered, but they failed to flower under the second set of conditions. Which of the following conclusions is consistent with these results?
A) The critical night length is 14 hours.
B) The plants are short-day plants.
C) The critical day length is 10 hours.
D) The plants flower in the late spring.

Question

Quizplus · Accepted Answer

The plants flowered with 14 hours of light, indicating they likely require longer daylight to flower, consistent with flowering in late spring when days are longer.

A Botanist Exposed Two Groups of the Same Plant Species