What use are desmids

Well ! what use are human beings ? Like all organisms they have their place in the complex web of life. Like other plants that contain chlorophyll, desmids live by capturing the sun's energy (photosynthesis). From carbon dioxide dissolved in the water they manufacture sugar and starch as food. They; and the food stored in them; are consumed by Amoeba (3) and various other invertebrates (4) which are in turn eaten by other animals. Desmids are known to absorb large quantities of barium and strontium (5), thus they play a part in the re-cycling of these chemical elements in freshwater.