MCQs Botany-16 Posted on 2024-07-142024-11-08Author admin 0 MCQs Botany-16 1. What is the role of aquatic producers in an ecosystem? To prey on secondary consumers To consume other organisms To decompose organic matter To produce organic matter from sunlight 2. ———— is the causal organism of citrus canker Bacillus subtilis Pseudomonas syringae Erwinia amylovora Xanthomonas citri 3. Which of the following plants uses the C4 pathway? Maize Cactus Wheat Pineapple 4. The shrinkage of protoplasm due to loss of water is known as —— Exosmosis Endosmosis Plasmolysis Diffusion 5. At which temperature (oC) water has maximum density? 4 °C 50 °C 100 °C 0 °C 6. For metabolic processes of the cell, energy is supplied by ————-molecules. NADP AMP ATP ADP 7. Which of the following is considered a persistent organic pollutant (POP)? Benzene Carbon monoxide DDT Ozone 8. What happens when plants take up excessive sodium? Potassium uptake increases Nitrogen uptake increases Potassium uptake decreases Calcium uptake decreases 9. ——— is a monosaccharide and the most common source of energy for cells Galactose Ribose Fructose Glucose 10. Guttation occurs through —-. Stomata Lenticels Salt glands Hydathodes Loading …
