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