FORESTRY
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glycoprotein
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Lipoprotein
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Chromoprotein
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Flavoprotein
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Detailed explanation-1: -Phytochrome is a chromoprotein. It acts as a photoreceptor in plants. It is sensitive to light in the red and far-red regions. Phytochromes regulate processes linked with photoperiods like flowering, seed germination, chlorophyll synthesis, etc.
Detailed explanation-2: -Eukaryotic Phytochromes Are Protein Kinases.
Detailed explanation-3: -Chemically, phytochrome consists of a chromophore, a single bilin molecule consisting of an open chain of four pyrrole rings, covalently bonded to the protein moiety via highly conserved cysteine amino acid.
Detailed explanation-4: -Chromoproteins: These are composed of simple proteins with chromotropic group as prosthetic group. Examples include hemoglobin (prosthetic group is heme), flavoproteins (prosthetic group is riboflavin), cytochrome (prosthetic group is heme), etc.