Which one of the following statements is true for the phytochromes ?

Options

A. Phytochrome is a phytohormone
B. Phytochrome is a photosynthetic pigment
C. Phytochrome is a pigment that controls growth, photomorphogenesis and development of many plants
D. Phytochrome is a regulatory protein that controls several dark–dependent developmental processes

Answer

C

Explanation

Phytochrome is a photoreceptor, a pigment that plants use to detect light. Important plant responses regulated by it are the photoperiodic induction of flowering and light-induced seed germination.