Science
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Chapter 7: Diversity in Living Organisms
Class: IX
Exercise number 82
Question 1
Which do you think is a more basic characteristic for classifying organisms?
(a) the place where they live.
(b) the kind of cells they are made of. Why?
Answer 1
(b) The more basic characteristic for classifying an organism is the kind of cells they are made of because it gives a scientific angle to classification.
Question 2
What is the primary characteristic on which the first division of organisms is made?
Answer 2
The primary characteristic on which the first division of organisms is made is organization of nucleus. According to this, organisms can be either classified as prokaryotic or eukaryotic.
Question 3
On what bases are plants and animals put into different categories?
Answer 3
Plants are autotrophs, while animals are heterotrophs. Cell wall is present in plant cells, while it is absent in animal cells. Plants do not need to move from one place to another, while most of the animals need to move in search of food.
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