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