MCQ Chapter 12 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7The Muscular System and Digestive System in Human Beings 1. What do micro-organisms form in adverse conditions? New organelles A thick covering Larger cells More cytoplasmQuestion 1 of 202. What is the optimal temperature range for micro-organism growth? 0°C - 15°C 25°C - 37°C 50°C - 70°C 100°C - 120°CQuestion 2 of 203. Which micro-organism is classified as multicellular? Bacteria Virus Fungus on bread ProtozoaQuestion 3 of 204. What do microbes in soil convert garbage into? Plastic Manure Metal WaterQuestion 4 of 205. What do micro-organisms in root nodules of leguminous plants produce? Oxygen Nitrogen compounds Carbon dioxide SugarsQuestion 5 of 206. What process converts milk into yoghurt? Photosynthesis Fermentation Respiration DecompositionQuestion 6 of 207. What causes the increase in volume of bread dough? Heat expansion Carbon dioxide from fermentation Water evaporation Sugar breakdownQuestion 7 of 208. What are antibiotics produced from? Plants Microbes Chemicals AnimalsQuestion 8 of 209. What does a vaccine increase in the body? Toxins Immunity Pathogens TemperatureQuestion 9 of 2010. What can some microbes clear from an ocean surface? Plastic debris Oil slicks Dead fish Salt crystalsQuestion 10 of 2011. What do harmful micro-organisms release into food? Nutrients Enterotoxins Vitamins SugarsQuestion 11 of 2012. Which disease is transmitted by a mosquito bite? Typhoid Dengue Pneumonia HepatitisQuestion 12 of 2013. What percentage of diseases are due to uncleanliness? 50% 80% 90% 100%Question 13 of 2014. What happens to body temperature during a microbial infection? It decreases It rises It stays constant It drops sharplyQuestion 14 of 2015. Why do fungi grow on damp clothes? Lack of oxygen Humid atmosphere Cold weather Dry conditionsQuestion 15 of 2016. Which organelle is present only in plant cells according to the exercise? Nucleus Cell wall Mitochondrion LysosomeQuestion 16 of 2017. What is produced by micro-organisms from garbage? Plastic Manure Metal GlassQuestion 17 of 2018. Why do diseases spread during floods? Air becomes cleaner Pathogens spread in contaminated water Temperature drops Mosquitoes disappearQuestion 18 of 2019. Why does stale food cause food poisoning? It loses flavor Microbes release toxins It becomes dry It lacks nutrientsQuestion 19 of 2020. Why does bread rise during baking? Heat expands flour Carbon dioxide from fermentation Water boils Yeast diesQuestion 20 of 20 Loading...
Leave a Reply