Tejinder, Academic Content Writer at Edumarz
Classification – the process of classifying the organisms and categorising them into discrete known categories is known as Classification.
With the passing time creatures present on earth adapt themselves to their surrounding environmental changes and then a better creature with more advanced body design and function comes into existence.
If we closely look at the creatures present on the earth in historic times and then take a look at the present ones, we can easily point out that they have evolved through the decades.
This process by which change occurs in the heritable characteristics of the populations with successive generations is called Evolution.
If we study the evolution of humans (Homo sapiens) we come to know that the ancestors of humans are actually ape-like and through the years they have evolved their brain capacity, posture etc. and the present humans came into existence.
Most of the life forms that exist today have arisen by the accumulation of the changes in their body design that have allowed them to survive and adapt to the surroundings better.
Scientist Charles Darwin was the first one who described the concept of Evolution. He wrote a book “The Origin of Species” in 1859 where he gave his theories about evolution and how it works.
On relating the concept of evolution with the life forms we identify that some life forms are very basic and have a simpler body design that have not changed much through the years, such as the ancient protists and monerans. On the other side there are some life forms that have complex body designs.
Those life forms that have the simple/basic body design are known as lower or the primitive group and the ones having complex body design are known as higher or the advanced group.
Such groups and their relation with evolutionary changes forms the basis of the modern classification system.