Question

Germination of some seeds is promoted by

• A. Green light
• B. Red light
• C. Far-red light
• D. Blue light

Answer 1

The correct option is B Red light

Seed germination requires sufficient amount of P${}_{p}r$fr. P${}_r$ is synthesized by germinating seeds and is converted to P${}_{p}r$ when exposed to red light. However, when seeds are exposed to far-red light, they will not germinate as P${}_r$ is converted to P${}_r$.

Thus, the correct answer is option B.