In a way, green plants and cyanobacteria

Cyanobacteria are unicellular prokaryotic organisms. They have photosynthetic pigments like chlorophyll ac, phycocyanin and phycoerythrin. These enable them to

produce food by themselves. Green plants are multicellular organisms capable of making food by using carbon dioxide, water and light energy. Therefore the bacteria and

green plants make food for living organisms on earth.