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