MCQs Botany-27 Posted on March 9, 2025August 30, 2025Author agropublishers 0 1. ———— pigment plays a central role in photosynthesis? Carotenoid None of these Anthocyanin Chlorophyll 2. What is the potential role of soil organic carbon in relation to plant growth? It acts as a carbon sink and improves soil fertility It provides direct energy to plants It decreases soil microbial activity It prevents water absorption by roots 3. CLCV stands for__________________? Cotton leaf cover virus Cotton leaf curl virus Cotton leaf complete virus Cotton leaf cotton virus 4. Organisms that obtain their nutrition by feeding on dead and decaying organic matter are called _____________________. Bacteria Obligate parasites Parasites Saprophytes 5. Taxonomically, conifers are included in which group of plants? Bryophytes Mosses Gymnosperms Pteridophytes 6. Response of plants to high salinity include ———— Both Accumulation of compatible solutes and Reduced photosynthesis Reduced photosynthesis Accumulation of compatible solutes None of these 7. CAM (Crassulacean Acid Metabolism) plants conserve water in arid environments and fix CO₂ primarily during ———— Daytime Midday Evening Nighttime 8. What is the overall equation for photosynthesis? 6CO₂ + 6O₂ → C₆H₁₂O₆ + 6H₂O 6CO₂ + 12H₂O → C₆H₁₂O₆ + 6O₂ + 6H₂O 6H₂O + 6O₂ → C₆H₁₂O₆ + 6CO₂ 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ 9. ———– removes CO₂ from the atmosphere and converts it into organic matter Combustion Respiration Decomposition Photosynthesis 10. Lenticels are small porous openings in plants, often associated with the formation of——— Apical meristem Vascular cambium Intercalary meristem Cork cambium Loading …
