Plants provide most of world food and oxygen
Plants do not move and are called green plants and these include conifers and other gymnosperms, flowering plants, ferns, liverworts, mosses and green algae. They do not fall under the red and brown algae. In fact, it is believed that there are about 300.000 species, most of which around 260.000 to 290.000 plants seeds. Green plants provide most of the world of molecular oxygen. Ones that produce cereals, vegetables and fruits are staple foods of mankind. Some in it’s great variety were used for medicine and as a garnish. Green ones have cell walls of cellulose and most of it’s energy derived from sunlight via photosynthesis by primary chloroplasts, derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophyll A and B, which gives them their green color. For instance, some are parasitic and have lost their ability to produce normal amounts of chlorophyll and photosynthesis. They are also characterized by sexual reproduction. Non-sexual reproduction is also co
