MCQs Agronomy-50 Posted on February 2, 2025August 30, 2025Author agropublishers 0 1. The phenomenon responsible for the increased vigor and yield of hybrid seeds is known as ———- Polyploidy Genetic drift Mutation breeding Heterosis 2. Which tobacco variety is known for its high nicotine content? Burley Oriental Rustica Virginia 3. What is the estimated number of human deaths associated with tobacco use worldwide each year? 1 million 8 million 10 million 5 million 4. What is the purpose of curing tobacco leaves? Reduce nicotine content Remove moisture AND Develop flavor and aroma Remove moisture Develop flavor and aroma 5. What is the primary function of nicotine in the tobacco plant? To attract pollinators To store energy To enhance photosynthesis To defend against herbivores 6. ————- percentage of global tobacco production is used for cigarettes Around 50% More than 95% Around 70% More than 80% 7. On 4 August 2020, a large amount of fertilizer—————— stored at the port in Beirut, Lebanon exploded, causing more than 200 casualties. None of these Calcium sulfate Urea Ammonium nitrate 8. Which of the following is the dominant cropping system of South Punjab, Pakistan Cotton-wheat Groundnut-maize Rice-maize Rice-wheat 9. Hybrid seeds often produce higher crop yields because they —- Result from crossbreeding parent plants with desirable traits Require less fertilizer and pesticides Are genetically modified organisms (GMOs) Have undergone natural selection for thousands of years 10. Sprinkler irrigation system is more suitable for —— crops Perennial Deep-rooted Shallow-rooted Tap-rooted Loading …
