Euglena green - are single-celled animals found in fresh stagnant ponds, marshes, ditches, puddles.Painting of the body due to the content of a large number of chloroplasts in the cytoplasm.Therefore, it seems that the water "blooms" when it is diluted excessively euglena green.
structure it a little more difficult when compared to an amoeba.Both of them have the protoplasm and the nucleus.However euglena green outside still covered with a layer of pellicle - elastic shell.The body has a shape resembling a spindle, blunt at one end and elongated - with another.From the recesses at the forefront leaves little flagellum.There is a bright red "eye", reacts to light and thereby helps the cells to select the direction of travel.Next to it is vacuoles.Due to the sealed outer shell shape of animals does not change significantly, it can only slightly, within certain limits, to shrink and straighten.Such a structure of Euglena green causes and way of moving.Making flagellum rotational movement, is a microscopic creature rather quickly swims.There are species that make the body undulation and thus float.Why is it still not clear.Biologists have two suggestions in this regard.On the one hand, there may be a link between organelles and Euglena protein filaments that are under pellicle and may decline.On the other hand, this type of movement may be caused by mucus secreted by the cell.
euglena Eating green can and the animal and the plant.The way she chooses, depending on the lighting.Its cytoplasm contains more than twenty oval cells - chromatophores.They are, as mentioned above, and stained cells in green.In the afternoon, using chlorophyll contained in the chromatophores, green euglena able to participate in photosynthesis, carbon assimilating it needs as well as plants - carbon dioxide.Thus in its body formed from inorganic nutrient substances resembling starch and is deposited in the form of grains in the cytoplasm.At night, this cell can be supplied as well as the animal.It is capable of using the vacuoles immediately processed organic matter in water bodies which have plenty in dissolved form.So does the amoeba.And the neglect of the pond, the more of these substances more.If euglena green is in the darkness for a long time, the chlorophyll disappears from the chromatophores.Accordingly, it disappears from the cell and painting, it is completely discolored.
There are species that are generally unnatural photosynthesis, they can only eat like animals.They even developed a kind of mouthparts to ingestion of microscopic particles of food.
Choice of this body is able to supply the scientists once again points to the fact that plants and animals have the same origin.
Propagated euglena green longitudinal division of the cell itself: after the protoplasm is divided into two halves and the core.Each individual appeared grows new flagellum.Under favorable conditions, Euglena green bred so much that the water also becomes appropriate color.There are some types of single-celled organisms that are evolving, remarkably adapted to live even in the cold.As a result of such adaptation in times of mass reproduction of snow is not only painted in green, and in red, yellow and even blue.There are also
Euglena cells, which are full of carotene.They are painted ponds red or brown.When the rivers, pools, marshes t. N. Dry up or freeze, euglena Green loses the flagellum, rounded, covered with thick shell - at the time, transformed into a cyst.As such, it can wait for favorable conditions in the same place or carried with the dust.
