Suppose You Have Discovered a New Effect of Light on Some

Multiple Choice

Suppose you have discovered a new effect of light on some aspect of plant development.How could you most easily show that phytochrome is the photoreceptor?

A) Show that the effect of blue light is stronger than the effect of red light.
B) Show that blue light is effective.
C) Show that the effect of red light is blocked by exposure of the plant to far-red light afterward.
D) Show that green light is effective.
E) Show that ultraviolet light is effective.