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