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