Biology is the science concerned with the living organisms. However, science involves events which exist only within the space-time coordinates. But liveliness also etymologically means having a soul. The first and foremost problem of biology is that the living organism as his subject-matter is not one of the facts which the modern science deals with. The purpose of this article is to explain how the biology-based, animist scientific approach laid down by Aristotle and followed by many others for ages had changed into the Modern Secular West European Civilization's inorganic, mechanicist and matter-based scientific approach. With the reference to that, it's been tried to understand how the living organism are explained by Mechanics which is the science concerned primarily with inorganic matters. While doing that the relations of scientific approaches with the prevailing paradigms of their time have also been dealt with.