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Classification And Evolution

Evolution and Classification

You know that a huge variety of living organisms exists in this world. Have you ever wondered as to how this great biodiversity came to be on Earth?

A diverse multitude of life forms surrounds us—ranging from microscopic organisms like bacteria and algae to giants like the blue whale and redwood tree. There are some living beings that differ from one another only slightly; there are others that differ to a much greater extent. It is evolution that is responsible for this diversity of plant and animal life that exists on Earth.

It is a well-known fact that life started on Earth with the simplest unicellular form and gradually developed into more and more complex forms. This happened due to the accumulation of changes in the body designs of ancient organisms. This slow change in the body design of an organism over a long period of time is termed as evolution. It helps an organism survive in its surroundings.

Is it easy to identify all living organisms one by one?

No, it’s not easy. This is the reason why we have a system of classification. Under this system, organisms are divided into groups based on their differences, and each group contains organisms with similar characteristics. Classification makes the study of the huge biodiversity easy.

Are there more reasons for classifying organisms?

Here are the reasons why we need the system of classification.

  • To make the study of organisms easy and organized
  • To understand the relationship between various organisms
  • To have a clear and practical way of organizing and communicating information about organisms
  • To indicate the evolutionary pathways along which present-day organisms may have developed

Know Your Scientist 

Charles Darwin (1809−18…

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