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