A) florigen
B) chlorophyll
C) plastocyanin
D) phytochrome
Correct Answer: D
Solution :
A pigment concerned with both floral induction and seed germination is phytochrome. It is responsible for photomorphic changes and developmental process in flowering plant. Phytochrome is sensitive to red and far-red light. It exists in two inter conversible forms\[\text{-PR}\] and\[{{\text{P}}_{\text{FR}}}\text{.}\,{{\text{P}}_{\text{R}}}\] form absorbs red light and is changed into \[{{\text{P}}_{\text{FR}}},\] which absorbs far-red light and is changed into \[{{\text{P}}_{\text{R}}}\] form.
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