There are about 70000 different types of monocelled animals. They live in fresh and sea water, in the soil, in a body of multicellular animals and even the person. Protozoa can move with the help lozhnonozhek, zhgutik, eyelashes and other devices.
Instruction
1. Amoebas contain more than 100 types. All have at them a naked body, and they move with the help lozhnonozhek, why, in view of external similarity lozhnonozhek with roots of plants, carry these protozoa to kornenozhka. Semi-fluid cytoplasm of which the amoeba body consists constantly moves, forming protrusions and promoting movement of an animal.
2. Foraminifera, sea kornenozhka, have a limy sink. Lozhnonozhki lean out through the mouth and a time of sinks in the form of the long intertwining threads. Deposits of sea breeds and precipitation are formed of shells of the died-off animals.
3. Also luchevik, or the radiolarias reminding small asterisks, prickly balls, snowflakes and other fancy figures belong to sea amoebas. These monocelled soar in water thickness. Their shells consisting of silicon dioxide form large deposits subsequently.
4. With still water lives in the polluted reservoirs, eating the decaying leaves, an euglena green – a flagellate. It has the dulled front end of a body and the pointed back, and dense outer layer of cytoplasm helps it to keep a constant form. On the front end of a body is available zhgutik – a thin threadlike outgrowth of cytoplasm. Rotating zhgutiky, the euglena is screwed in in water and floats a blunt end forward. The body monocelled at the movement almost does not change.
5. It is interesting to note how the volvox – colony of flagellates of protozoa moves. About 1000 monocelled, similar to an euglena green, are collected in a uniform ball, and outside at each of them about two zhgutik stick out. By means of these zhgutik the volvox is rolled in water.
6. Infusorians there are more than 7000 types, but the most known of them – a paramecium caudatum. All of them have numerous eyelashes by means of which move in water on the surface of a body and row up to a mouth food – bacteria, small seaweed, monocelled animals. Existence of big and small kernels is characteristic of all infusorians.