MCQ Chapter 11 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Cell Structure and Micro-organisms 1. Which micro-organism is multicellular according to the document? Bacteria Virus Fungus on bread ParamoeciumQuestion 1 of 202. What converts garbage into manure in soil? Plants Microbes Animals WaterQuestion 2 of 203. What do micro-organisms in root nodules of leguminous plants do? Produce oxygen Convert nitrogen into compounds Absorb water Break down soilQuestion 3 of 204. What process do microbes use to convert milk into yoghurt? Photosynthesis Fermentation Respiration DecompositionQuestion 4 of 205. What gas causes bread dough to rise during fermentation? Oxygen Nitrogen Carbon dioxide HydrogenQuestion 5 of 206. What are antibiotics used for? Increasing food taste Destroying pathogens Growing plants Cleaning waterQuestion 6 of 207. What does a vaccine do? Cures diseases instantly Increases immunity Produces toxins Reduces body temperatureQuestion 7 of 208. What can micro-organisms clear from an ocean surface? Plastic waste Oil slicks Dead fish Salt depositsQuestion 8 of 209. What do harmful micro-organisms release into food? Nutrients Enterotoxins Sugars VitaminsQuestion 9 of 2010. Which disease is caused by pathogens entering through a mosquito bite? Typhoid Malaria Common cold HepatitisQuestion 10 of 2011. What percentage of diseases are linked to uncleanliness according to the document? 50% 60% 80% 90%Question 11 of 2012. What happens to body temperature when micro-organisms enter the body? It decreases It stays the same It rises It fluctuates randomlyQuestion 12 of 2013. Why do fungi grow on damp clothes in the rainy season? Lack of sunlight Humid atmosphere Cold temperature Dry conditionsQuestion 13 of 2014. What is the organelle called that is present only in plant cells according to the exercise? Nucleus Cell wall Mitochondrion LysosomeQuestion 14 of 2015. What do micro-organisms convert garbage into? Plastic Manure Metal WaterQuestion 15 of 2016. Which organelle carries out photosynthesis? Mitochondrion Chloroplast Golgi body VacuoleQuestion 16 of 2017. Why do diseases spread during heavy rainfall and floods? Dry conditions increase Pathogens spread through contaminated water Air becomes cleaner Mosquitoes decreaseQuestion 17 of 2018. Why is there a risk of food poisoning from stale food? It loses taste Microbes release toxins It becomes too dry It lacks nutrientsQuestion 18 of 2019. Why is soil turned over during tilling? To expose microbes to air To remove rocks To dry the soil To plant seeds deeperQuestion 19 of 2020. Why does bread rise during baking? Heat expands the flour Carbon dioxide from fermentation Water evaporates Sugar caramelizesQuestion 20 of 20 Loading...
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