* the plant body may be unicellular, colonial or filamentous.
*it has chlorophyll a and b.
*pigments are present in chloroplast.
*shape of chloroplast may be discoid, plate like, reticulate,cup-shaped,spiral or ribbon shaped in different species.
*storage body of this algae is caller pyrenoids located in chloroplast.
*pyrenoids contains protains.
*some algae contain oil drop lets as stored food.
*green algae have rigid cell wall, inner layer of cellulose and outer layer of pectose.
*vegetative reproduction by fragmentation.
*asexual reproduction by flagellated zoospores.
*sexual reproduction by sex cells, they may be isogamous, anisogamous or oogamous.
*e.g.-Chlamydomonas, Volvox, Ulothrix, Spirogyra, Chara
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