Skssknowledge

Herbarium Herbaria Play an important role in taxonomy. They give important information regarding plant species for classification of plants. These are source of taxonomic research. IMPORTANT HERBARIA AND BOTANICAL GARDENS OF THE WORLD Important Herbaria :                 The art of Herbarium was started by an Indian taxonomist Luca Ghini(1490-1556). The concept of preserving plant specimen in dired from is 450 years old. The oldest preserved herbarium specimen is kept in Rome, collected by the naturalist Gherardo Cibo. From long past different countries all over world started collecting harbaria. 1. Maseum National d' Historica naturelle, Paris - 10,500,000 2. Royal Botanic Garden, Kew - >5,000,000 3. Komavov Botanical Institute, Leningrad - >5,000,000 4. Conservatoire et Jardin Botaniques, Geneva - 5,000,000 5. New York Botanical Garden, New York - 4,300,000 6. Harvard University, Cambridge, USA - 4,250,000 7. U.S. National Herbarium, Washi...

-: Introduction Before going to study ecology, We should know about life and environment. Life originated in our earth around four billion years ago. It is generally agreed that all life forms of today evolved by a common descent from a single primitive life form. It is not known how this early life form came into existence, but scientists think that it was a natural process which took place perhaps 3,900 million years ago. They were found in iron and silica rich rocks which were once hydrothermal vents in the Nuvvuagittuq greenstone belt of Quebec, Canada. If this is the oldest record of life on earth, it suggests ' an almost instaneous emergence of life ' after oceans were formed 4.4 billion years ago. Moreover a scientific study showed that geological formation of stromatolites of 3.45 billion years old contain fossilized cyanobacteria and stromatolites were also the oldest known life records on earth. -: CONCEPT OF ECOLOGY After knowing about life, living organisms, biosphe...