question_answer

Phytochrome becomes active in:

A)  green light                        

B)  blue light           

C)         red light                             

D)         none of these

Correct Answer: C

Solution :

Phytochrome is a proteinaceous pigment involved with flowering stimulus. It present in two forms (\[{{P}_{R}}\] and \[{{P}_{FR}}\]). Phytochrome become active in red light (660 nm) and leads to conversion of phytochrome red (PR) into phytochrome far red (PPR).