Reproduction in Euglena In E. viridis no sexual reproduction occurs. It reproduces by asexual binary and multiple fissions and undergoes encystment. Under favorable conditions euglenas reproduce by longitudinal binary fission. The longitudinal binary fission is always symmetrogenic, that is, the parental Euglena divides into two daughter individuals, where one is the plane mirror image of [...]
Warner and Satir (1974) described the structure of a flagellum as seen under Electron Microscope. According to them various microtubules extending from the base to the tip of the flagellum construct the basic frame work of a flagellum. These are altogether eleven microtubules of which nine are situated at the periphery and two at the [...]
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The following classification recommended by the Society of Protozoologists (Levine et.al., 1980), the subkingdom Protozoa is divided into seven phyla: 1) Sarcomastigophora, 2) Apicomplexa, 3) Myxozoa, 4) Microspora, 5) Labyrinthomorpha, 6) Ascetospora & 7) Ciliophora. 1) Phylum Sarcomastigophora; Single type of nucleus, except in Foraminiferida. Sexuality, when present, essentially syngamy. With flagella, pseudopodia or both [...]
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Introduction: Amoeba is the most popular, free-living available protozoan. It is commonly found on the bottom mud or on underside of aquatic vegetation in freshwater ponds, ditches, lakes, springs etc. It moves and feeds with the help of false or pseudopodia, formed as a result of streaming flow of cytoplasm.
Membrane Transport Processes Diffusion: the migration of molecules or ions as a result of their own random movements, from a region of higher concentration to a region of lower concentration. Osmosis: – is the movement of water through a semipermeable membrane movement of water (at constant temp. and pressure) is from the solution with lower [...]
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