|Class 9 Biology Diversity In Living Organisms||Classification and Evolution|
Classification and Evolution
Organizing the living organisms into groups according to a certain set of characteristics is called classification.
The features belonging to a particular organism is called characteristics.
We need classification due to following reasons:
Organisms can be classified on the basis of their characteristics:
Aristotle classified the organism on the basis of their habitat.
But this strategy couldn’t work because the plants weren’t considered here.
Some animals except one characteristic did not share any other characteristics in common. For example, fish and octopus both are aquatic animals but except living in water they don’t share any other common characteristics.
The process of development of complex organisms from simpler one with time is called evolution.
Fig. Evolution in Human beings