绿藻，顾名思义，绿藻的外表是绿色的。绿藻是植物的祖先，它可以进行光合作用，每个绿藻有一只光眼，光眼可以引导绿藻自身向光运动。

Green algae, as the name suggests, have a green appearance. Theyare the ancestors of plants that can photosynthesize, and each of them has an optical sensor which guides the green algae to move towards the light.

恰如奋斗中的你我，总是努力地向着阳光跑去。

The move of the green algae is like all of us who are striving after a lofty ideal.

绿藻门(Chlorophyta)成员，约6,700种。 光合色素(叶绿素a和b、胡萝卜素、叶黄素)的比例与种子植物和其他高等植物相似。典型的绿藻细胞可活动或不能活动。具有一中央液泡,色素在质体中，质体形状因种类而异。细胞壁由两层纤维素和果胶质组成。食物以淀粉的形式储存于质体内的蛋白核中。细胞壁的成分主要是纤维素。游动细胞有2或4条等长的顶生的尾鞭型的鞭毛。

There are about 6,700 species in the Chlorophyta. The proportion of photosynthetic pigments (chlorophylls a and b, carotenoids, lutein) is similar to those of seed plants and other higher plants. Typical green algae cells may or may not be able to move. A green algae cell has a central vacuole and the pigments are in the plastids which vary in shape depending on the species. Its cell wall is composed of two layers of cellulose and pectin. The food that it eats is stored as starch in its protein nucleus within the plastid. Its cell wall is composed mainly of cellulose, and it has two or four isometric whiplash type flagellums which are acrogenous.

绿藻的体型多种多样，有单细胞、群体、丝状体或叶状体。繁殖的方式也多样，无性生殖和有性生殖都很普遍，有些种类的生活史有世代交替现象。

The body shape of green algae is diverse like single cells, colonies, filopodia, or chloroplasts. The way of reproduction is also diverse, and both asexual and sexual reproduction are common, with some species having alternating life histories.

绿藻中如石莼、礁膜、浒苔等历来是沿海人民广为采捞的食用海藻。海产扁藻、小球藻等单细胞绿藻繁生快，产量高，含有一定量的蛋白质、糖类、氨基酸和多种维生素，可作食品、饲料或提取蛋白质、脂肪、叶绿素和核黄素等多种产品。有的绿藻可作为药用，如小球藻、孔石莼等。

Green algae such as ulva, monostroma, enteromorpha have been widely harvested by people living in coastal areas as edible seaweeds. The single-celled green algae such as platymonassp. and Chlorella sp. characteristic of fast production and high yields contain certain amounts of protein, sugar, amino acid and many kinds of vitamins, which can be used to produce food, fodder or to extract protein, fat, chlorophyll and riboflavin and so on. Some green algae can be used for medicinal purposes, such as Chlorella sp.and ulva lactuca L.

此外，利作藻菌共生系统和活性藻的方法来处理生活污水和工业污水。

In addition, the algal-bacterial symbiotic system and the active algae can be used to treat domestic and industrial wastewater.