Phytochrome plays a critical role in seed germination. Which of the colors maximizes the seed germination?
A) red
B) blue
C) violet
D) orange

Question

Quizplus · Accepted Answer

Phytochrome exists in two interconvertible forms Pfr (active form) and Pr (inactive form). Pfr is the form responsible for promoting germination. It absorbs red light and is converted from Pr. Therefore, red light maximizes seed germination. Other colors, including blue, violet, and orange, have different effects on plant growth and development.

Phytochrome Plays a Critical Role in Seed Germination