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FRESHWATER PLANT LIFEintroduction
BACTERIA AND FUNGI
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adult Amaba antheridia appearance aquarium aquatic insects attached bacteria body canals carapace cell wall characteristic chloroplasts cilia Cladocera collecting colony colour condenser conjugation containing contractile cover-glass covered Crustacea culture Cyclops Daphnia dark-ground illumination described diatoms Dytiscus easily eggs Euglena examination eyepiece flagella flagellum floating formalin free-swimming freshwater fungi genus gills green algae growing habitat hydra individual interesting lakes large numbers larger larva leaves light living specimen low powers magnification marine method micro microscope microscopist mounted move movement nematocysts nucleus nymph objective observation obtained occur oogonia organisms Paramecium parasitic particularly plankton Plate pocket lens pond water portion present protoplasm protozoa pyrenoids reproduction rotifers seen shape shell side slide smaller snail solution sometimes Spirogyra sponge stages staining statoblasts stem stream structure submerged substage suitable surface swimming takes place tentacles tion transparent tube usually vacuoles vegetation Volvox Vorticella weed zoospores