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NCERT solutions Science Class 9 chapter 7 Diversity in Living Organisms


NCERT Science Class 9

Science Textbook for Class 9

Chapter 7 - Diversity in Living Organisms

Page 80

Why do we classify organisms?

Q 1 | Page 80

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

Q 2 | Page 80

Page 82

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?

Q 1 | Page 82

What is the primary characteristic on which the first division of organisms is made?

Q 2 | Page 82

On what basis are plants and animals put into different categories?

Q 3 | Page 82

Page 83

Which organisms are called primitive and how are they different from the so-called advanced organisms?

Q 1 | Page 83

Will advanced organisms be the same as complex organisms? Why?

Q 2 | Page 83

Page 85

What is the criterion for classification of organisms as belonging to kingdom Monera or Protista?

Q 1 | Page 85

In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?

Q 2 | Page 85

In the hierarchy of classification, which grouping will have the smallest number of organisms with a maximum of characteristics in common and which will have the largest number of organisms?

Q 3 | Page 85

Page 88

Which division among plants has the simplest organisms?

Q 1 | Page 88

How are pteridophytes different from the phanerogams?

Q 2 | Page 88

How do gymnosperms and angiosperms differ from each other?

Q 3 | Page 88

Page 94

How do poriferan animals differ from coelenterate animals?

Q 1 | Page 94

How do annelid animals differ from arthropods?

Q 2 | Page 94

What are the differences between amphibians and reptiles?

Q 3 | Page 94

What are the differences between animals belonging to the Aves group and those in the mammalia group?

Q 4 | Page 94

Page 97

What are the advantages of classifying organisms?

Q 1 | Page 97

How would you choose between two characteristics to be used for developing a hierarchy in classification?

Q 2 | Page 97

Explain the basis for grouping organisms into five kingdoms.

Q 3 | Page 97

What are the major divisions in the Plantae? What is the basis for these divisions?

Q 4 | Page 97

How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?

Q 5 | Page 97

Explain how animals in Vertebrata are classified into further subgroups.

Q 6 | Page 97

NCERT Science Class 9

Science Textbook for Class 9