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it is on all the micro-organisms

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  1. 1. Name-Devansh Bhandari Std-V Topic-micro-organisms
  2. 2. Micro-Organisms • A microorganism is a microscopic organism, which may be a single cell [1] or multi cellular organism. The study of microorganisms is called microbiology, a subject that began with Antoine van Leeuwenhoek 's discovery of microorganisms in 1675, using a microscope of his own design.
  3. 3. Bacteria • Bacteria constitute a large domain of prokaryotic domain of prokaryotic micro-organisms . Typically a few micro -meters in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth , and are present in most of its habitats . Bacteria in habit soil, water, acidic hot springs, radioactive waste[2] and the deep portions of Earth's crust . Bacteria also live in symbiotic and parasitic relationships with plants and animals. They are also known to have flourished in manned spacecraft.[3]