What characterizes green algae
Green algae - a department of lower plants, which are characterized by bright green color because of the large amount of chlorophyll in their cells.These algae include the same pigments as in higher plants (carotene and xanthophyll and chlorophyll).Plants are divided into several types: colonial, single-celled and multicellular.This past more frequently, and occasionally filamentous plate shape.Some of the green algae are non-cellular structure, it's hard to believe, looking at the large and seemingly difficult outside subdivision.
Mobile colonial and unicellular algae species - gametes and zoospores are 2-4, and sometimes more flagella and a light-sensitive eye.The cells of these plants has one, at least some
of the nuclei, generally they are dressed in a shell of cellulose.Green algae can reproduce vegetatively (division into two bodies in unicellular, multicellular filamentous had - portions of the thallus), asexual (fixed spores and zoospores) and sex (heterogamy, isogamy, conjugation and oogamy) ways.
What are the species of green algae
Green algae are divided into two sub-division: green conjugates directly.Green, in turn, are divided into six classes: volvoxes, protococcal (chlorococcales), siphon, and sifonokladovye ulotriksovye.These plants are most densely distributed in fresh water, but sometimes there are in the sea.Some green algae - pleurococcus and trentepohlia, can live in the soil and on the trunks of trees.The colonial and unicellular plants are part of the plankton, if they can develop into a large quantity, cause algal blooms.
Monostroma and sea lettuce in East Asian countries is eaten.In many countries, Scenedesmus, Chlorella, and other unicellular used as basis feed for farm animals, as well as to restore the air contained ecosystems (e.g. in submarines) and for biological wastewater treatment.
most typical representative is a green algae Chlamydomonas its structure it is similar to flagellates.This single-celled plant oval with two flagella.The cells of this alga consists of a red eye, shell, pulsating vacuole, cytoplasm, with the cup-shaped chromatophore pyrenoid and core.Chlamydomonas live on the damp ground, and in pools, multiply zoospores, asexual, and all three forms of sexual.