The study of plants and animals existed even before the term biology was adopted by science. The phenomenon of natural history is explained by the living organisms like plants, animals, fungi, and other beings existing in the natural environment. Even there were other terms associated with the similar pattern of studies like natural theology and natural philosophy. These mainly stressed the observational part rather than the experimental field of study. Later on, in 1766 it was the works of Michael Christoph Hanow through which the term biology was taken into modern science. Biology started as a natural history marking the key difference between biology and biochemistry. Biochemistry evolved as a branch of science to know the chemical structure of a living organism.