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