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