A photoreceptor in seeds detects the ratio of red to far-red light, preventing seeds from germinating when:

Question

Quizplus · Accepted Answer

The photoreceptor in seeds detects the ratio of red to far-red light, which indicates whether the seed is in the shade of another plant or not. When a seed is in the shade, there is a higher proportion of far-red light due to absorption by other plants, which can trigger the seed to remain dormant and not germinate until it receives more direct sunlight. Therefore, option C is the correct choice.

A Photoreceptor in Seeds Detects the Ratio of Red to Far-Red