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1, Unit summary note, Std 6, Unit-1, Caskets of life, Elephant, Ant, , Camel, Mosquito, , Horse, Goat, Bed bug, , Louse, , 2. Micro organisms (Experiment note-1), Aim To find out is there any organisms that can not, seen with our naked eye., Materials, Microscope, hay-soaked water, slide, cover glass, Procedure, Take one drope of hay-soaked water on a glass slide. Cover, the slide with cover glass. Observe the slide though, the microscope., Observation, , Some tiny organisms like the following pictures are moving, through the watter in the slide.

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Inference, There are organisms that cannot be seen with naked eyes., They are microorganisms., 3. Cells, The body of all organisms are made up of many small units., These small unit of body are called cells., According to the number of cells in the body, organisms are, classified in to two categories., A. Unicellular organisms, Organisms with only one cell in their body are called, unicellular organisms. Amoeba, paramecium,, euglena, bacteria, clamidomonus and some kinds of algae, and fungi are examples for unicellular organisms., B. Multicellular organisms, Organisms with more than one cell in their body are called, multicellular organisms., Man, ant, goat, louse etc. are examples for multicellular, organisms., Plants are also multicellular organisms.