Chapter 7: Diversity in Living Organisms- Exercise- 81

Science

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Chapter 7: Diversity in Living Organisms

Class: IX

Exercise number 81

Question 1

Why do we classify organisms?

Answer 1

There are millions of species on this earth. It is not possible to study about each of them in human lifetime. Classification makes it easy to study the organisms; so we classify organisms on the basis of certain common characters.

Question 2

Give three examples of the range of variations that you see in life forms around you.

Answer 2

Three examples of the range of variations that we see in our life time

- Ants, cockroaches, spiders, houseflies, etc. All these insects look different from each other but they all belong to arthropoda.

- Humans, cats and dogs live in the same place but look different and all belong to mammalia.

- Wide variety of plants; ie from small grass to a big banyan tree.