Medicinal value of biodiversity : Biodiversity is a rich source of substances with therapeutic properties. Morphine obtained from Papever sominiferum is used as an analgesic, Quinine (Chincona sp.) is used for the treatment of Malaria, Taxol, anti-cancer drug obtained from the bark of Taxusbravifera, penicillin from Penicillium notatum and many other antibiotics used in treatment of different disease are obtained from many bacteria. Currently 25% of the medicinal drugs are drived from mere 120 species of plants.