Which pigment is involved in photoperiodic change in plants?
Phytochrome
Phytochrome is a pigment universally present in green flowering plants and is mainly responsible for photomorphogenic changes and developmental processes in them.
Cytochrome is an iron-containing hemeprotein that takes part in various metabolic activities.
Chlorophyll is a green pigment involved in photosynthesis.
Anthocyanins are water-soluble vacuolar pigments that may appear red, purple or blue.