Improvement in Food Resources (खाद्य संसाधनों में सुधार) Ch(12) Practice Quiz in Hindi Part – 2 || Class 9 Science Practice Quizzes in English Posted on February 28, 2025February 28, 2025 by Anshul Gupta0% 0 votes, 0 avg 0 Improvement in Food Resources (खाद्य संसाधनों में सुधार) Ch(12)Practice Quiz in Hindi Part – 2 || Class 9 Science Practice Quizzes in English 1 / 201. How many nutrients are supplied to plants by air, water, and soil? A. 10 B. 13 C. 12 D. 15 Explanation: Plants require a total of 15 nutrients, with air providing carbon and oxygen, water providing hydrogen, and soil supplying the remaining 13 nutrients. 2 / 202. What is the term for unwanted plants in a cultivated field? A. Pests B. Weeds C. Crops D. Pathogens Explanation: Weeds are undesirable plants that compete with crops for resources.3 / 203. Which of the following is NOT a level of production practice in agriculture? A. Low cost production B. High cost production C. Medium cost production D. No cost production Explanation: Production practices are categorized into no cost, low cost, and high cost based on the financial inputs involved. 4 / 204. What is the purpose of growing plants like sun hemp before sowing crops? A. To create green manure B. To provide shade C. To control weeds D. To attract pollinators Explanation: Plants like sun hemp are grown and then mulched into the soil to create green manure, which enriches the soil with nitrogen and phosphorus. 5 / 205. What is the main advantage of using manure over fertilizers? A. It protects the environment B. It provides higher levels of specific nutrients C. It harms micro-organisms in the soil D. It is commercially produced Explanation: Manure is a natural and eco-friendly way to enrich the soil, while fertilizers can have negative environmental impacts. 6 / 206. What is the term for growing two or more crops simultaneously on the same piece of land? A. Crop rotation B. Intercropping C. Mixed cropping D. Monoculture Explanation: Mixed cropping involves growing multiple crops together in the same field. 7 / 207. What is the term for farming with minimal or no use of chemicals? A. Industrial farming B. Conventional farming C. Organic farming D. Chemical farming Explanation: Organic farming focuses on using natural inputs like manure and bio-agents instead of synthetic chemicals. 8 / 208. What is the term for growing two or more crops simultaneously in a definite pattern? A. Monoculture B. Crop rotation C. Intercropping D. Mixed cropping Explanation: Intercropping is a specific type of mixed cropping where crops are grown in a distinct pattern. 9 / 209. What is the process of decomposing farm waste material in pits called? A. Composting B. Irrigation C. Green manuring D. Fertilization Explanation: Composting is the method of decomposing organic waste to create nutrient-rich manure. 10 / 2010. What is the benefit of dwarfness in cereals? A. Increased nutrient consumption B. No impact on nutrient consumption C. Less nutrient consumption D. Increased susceptibility to diseases Explanation: Dwarfness in cereals is a desirable trait as it reduces the amount of nutrients consumed by the plants. 11 / 2011. What are commercially produced plant nutrients called? A. Manure B. Fertilizers C. Pesticides D. Compost Explanation: Fertilizers are commercially produced to provide specific nutrients to plants. 12 / 2012. What is the purpose of introducing a gene into a crop for improvement? A. To hinder product quality B. To reduce crop yields C. To increase susceptibility to diseases D. To create genetically modified crops Explanation: Introducing a gene into a crop can result in genetically modified crops with enhanced characteristics. 13 / 2013. What is the correlation between higher inputs and yields in farming? A. No correlation B. Inverse correlation C. Direct correlation D. Neutral correlation Explanation: Higher inputs in farming, such as quality seeds, fertilizers, and irrigation, generally lead to higher yields. 14 / 2014. What is the term for growing different crops on a piece of land in a pre-planned succession? A. Monoculture B. Intercropping C. Mixed cropping D. Crop rotation Explanation: Crop rotation involves a planned sequence of different crops grown on the same land over time.15 / 2015. Which of the following is NOT a factor in the higher yields of high-cost farming? A. Quality seeds B. Weeds C. Fertilizers D. Irrigation Explanation: Weeds are unwanted plants that compete with crops for resources. 16 / 2016. Which of the following is NOT a macro-nutrient for plants? A. Potassium B. Phosphorus C. Nitrogen D. Iron Explanation: Iron is a micro-nutrient, while nitrogen, phosphorus, and potassium are macro-nutrients. 17 / 2017. What is the name of the process using earthworms to speed up decomposition? A. Composting B. Fertilization C. Vermi-composting D. Green manuring Explanation: Vermi-composting utilizes earthworms to accelerate the breakdown of organic matter. 18 / 2018. Which of the following is NOT a factor for variety improvement in crops? A. Lower yield B. Biotic and abiotic resistance C. Improved quality D. Wider adaptability Explanation: Crop variety improvement aims to achieve higher yields, among other factors like improved quality, resistance to biotic and abiotic stresses, and wider adaptability. 19 / 2019. What are nutrients required by plants in large quantities called? A. Micro-nutrients B. Vitamins C. Macro-nutrients D. Trace elements Explanation: Nutrients needed in larger amounts are called macro-nutrients, while those needed in smaller quantities are micro-nutrients. 20 / 2020. What does shorter crop duration from sowing to harvesting mean for farmers? A. Less economical variety B. No impact on economy C. Increased cost of crop production D. More economical variety Explanation: A shorter crop duration reduces the overall cost of production and allows farmers to grow multiple rounds of crops in a year. Please insert your information to see your ranking अपनी Ranking जानने के लिए कृपया अपनी जानकारी भरे NamePhone Number Your score isThe average score is 0% 0% Restart quiz Category: Class 9 Science Quizzes in English
