## CORE INFORMATION\n✓ **Answer**: Option B\n## CONCEPT FRAMEWORK\n **Primary Concept**: Classification of proteins based on prosthetic groups\n **Related Topics**: Photosynthesis, plant photomorphogenesis, protein structure\n **Prerequisites**: Basic understanding of protein structure and different types of proteins (flavoproteins, chromoproteins, glycoproteins, lipoproteins).\n## SOLUTION PATHWAY\n**Given Information**:\nThe question asks to classify phytochrome based on its composition.\n**Method & Steps**:\n 1. Identify the key component of phytochrome.\n Reasoning: Phytochrome is a photoreceptor protein that is involved in sensing light in plants. It contains a chromophore, which is a light-absorbing molecule.\n Formula/Rule: N/A\n 2. Determine the type of protein based on the presence of the chromophore.\n Working: Chromoproteins are proteins that contain a coloured prosthetic group (chromophore). Since phytochrome has a chromophore, it is classified as a chromoprotein.\n Key Point: The chromophore in phytochrome is a bilin, which is a linear tetrapyrrole.\n 3. Confirm the classification.\n Result: Phytochrome is a chromoprotein.\n Verification: The presence of a chromophore is the defining characteristic of chromoproteins, and phytochrome is known to possess a bilin chromophore.\n ## OPTION ANALYSIS\n[A] :x: Flavoproteins contain a flavin prosthetic group, which is not present in phytochrome.\n[B] ✓: Chromoproteins contain a colored prosthetic group, which is consistent with the bilin chromophore in phytochrome.\n[C] :x: Glycoproteins contain carbohydrate groups, which are not the primary characteristic of phytochrome.\n[D] :x: Lipoproteins contain lipids, which are not the primary characteristic of phytochrome.\n ## LEARNING AIDS\n **Common Mistakes**:\n 1.Confusing chromoproteins with other types of proteins: Understanding the defining characteristics of each protein type (flavoprotein, glycoprotein, lipoprotein) is crucial for accurate classification.\n 2. Focusing solely on the function: While phytochrome's function in light sensing is important, its classification is based on its chemical composition, specifically the presence of a chromophore.\n **Quick Tips**:\n 1. Remember the key components: Flavoproteins – flavin; Glycoproteins – carbohydrates; Lipoproteins – lipids; Chromoproteins – colored prosthetic group.\n 2. Associate phytochrome with its light-sensing role and the chromophore required for this function.

The correct Option is "chromoprotein"

NEET Botany Photosynthesis in Higher Plants MCQs

Prepare for NEET Biology Photosynthesis in Higher Plants with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert guidance to grasp light and dark reactions.

NEET Questions / Botany / Photosynthesis in Higher Plants