MCQ Chapter 11 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Cell Structure and Micro-organisms 1. What is the fundamental structural and functional unit of living organisms? Tissue Cell Organ Organ systemQuestion 1 of 202. Who first observed cells under a microscope in 1665? Anton van Leeuwenhoek Robert Hooke M. J. Schleiden Rudolph VirchowQuestion 2 of 203. What did Rudolph Virchow state about cells in 1885? All cells have a cell wall All cells are formed from pre-existing cells Cells are only in plants Cells are visible to the naked eyeQuestion 3 of 204. Which unit is used to measure the size of cells? Centimetre Millimetre Micrometre KilometreQuestion 4 of 205. What is used to observe onion cells in the experiment? Simple microscope Compound microscope Electron microscope Magnifying glassQuestion 5 of 206. What gives plant cells a definite shape? Cell membrane Cytoplasm Cell wall NucleusQuestion 6 of 207. Which organelle is present only in plant cells? Mitochondrion Chloroplast Lysosome Golgi bodyQuestion 7 of 208. What is the outermost covering of an animal cell? Cell wall Plasma membrane Cytoplasm VacuoleQuestion 8 of 209. Which organelle is known as the powerhouse of the cell? Nucleus Mitochondrion Endoplasmic reticulum VacuoleQuestion 9 of 2010. What controls all functions of the cell? Cytoplasm Nucleus Golgi body LysosomeQuestion 10 of 2011. What type of cells have membrane-bound organelles? Prokaryotic Eukaryotic Bacterial ViralQuestion 11 of 2012. Which organelle distributes proteins properly? Endoplasmic reticulum Golgi body Mitochondrion ChloroplastQuestion 12 of 2013. What is the main difference between plant and animal vacuoles? Plant cells have no vacuoles Animal cells have one large vacuole Plant cells have one large vacuole Animal cells have chloroplastsQuestion 13 of 2014. What are organisms that cannot be seen with the naked eye called? Macro-organisms Micro-organisms Eukaryotes ProkaryotesQuestion 14 of 2015. Where are micro-organisms commonly found? Only in water Air, water, soil, and bodies of organisms Only in soil Only in foodQuestion 15 of 2016. Which microscope is needed to observe micro-organisms smaller than 100 micrometres? Simple microscope Compound microscope Electron microscope Magnifying lensQuestion 16 of 2017. What is the size of the typhoid bacteria mentioned in the document? 28 nanometres 1 to 3 micrometres 100 micrometres 1000 micrometresQuestion 17 of 2018. Which type of cell lacks membrane-bound organelles? Eukaryotic Prokaryotic Plant cell Animal cellQuestion 18 of 2019. What do micro-organisms form during adverse conditions? New cells A thick covering More organelles Larger vacuolesQuestion 19 of 2020. What temperature range is optimal for micro-organism growth? 0°C - 15°C 25°C - 37°C 50°C - 70°C 100°C - 120°CQuestion 20 of 20 Loading...
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