A special lecture on "Bio-diversity as a goal of Environmental Education" at Karur Velalar College of Arts and Science for Women. Karur-Dt. (16.02.2018).

“Species diversity” means the whole of diversity life. It includes human-beings, animals, plants, fungi, bacteria, protozoa and viruses. Very rare and endemic species diversity has only found in the specific geographical region. The best example is Australia Kangaroo species. In the biosphere such kind of species not observed in any other parts world. And another best example is radiated tortoise groups found only in the Madagascar islands. Unicellular organisms are invisible to naked eye. Such as bacteria, archaea and protists. Cyano-bacteria is photosynthetic oxyntic groups. It is subclass of bacteria. It has found throughout the world. It is a ubiquitous nature. In archaea is very unfamiliar groups. It has found in hydrothermal springs of ocean. They do not have chlorophyll. From this lecture, I have motivated the students to know the taxonomical system of animals, plants and microbes.