Algen unter dem Mikroskop - algae under a microscope - microcosmos mikroorganismus

Algae is a very large and diverse group of eukaryotic organisms, ranging from unicellular genera, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga that may grow up to 50 meters in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem, that are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophy