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