Diversity in Living Organisms | Class 9 Science NCERT Chapter 7 Question and Answer |

Chapter 7

Diversity in Living Organisms

Page-80

Questions-

1. Why do we classify organisms?

Ans-

2. Give three examples of the range of variations that you see in lifeforms around you.

Ans-

 Page-82

Questions-

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?

Ans-

2. What is the primary characteristic on which the broad division of organisms is made?

Ans-

3. On what bases are plants and animals put into different categories?

Ans-

Page-83

Questions-

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

Ans-

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

Ans-

Page-85

Questions-

1. What is the criterion for classification of organisms as belonging to kingdom Monera or Protita?

Ans-

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

Ans-

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

Ans-

Page-88

Questions-

1. Which division among plants has the simplest organisms?

Ans-

2. How are pteridophytes different from the phanerogams?

Ans-

3. How do gymnosperms and angiosperms differ from each other?

Ans-

Page-94

Questions-

1. How do poriferan animals differ from coelenterate animals?

Ans-

2. How do annelid animals differ from arthropods?

Ans-

3. What are the differences between amphibians and reptiles?

Ans-

4. What are the differences between animals belonging to the aves group and those in the mammalia group?

Ans-

Exercises-

1. What are the advantages of classifying organisms?

Ans-

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

Ans-

3. Explain the basis for grouping organisms into five kingdoms.

Ans-

4. What are the major divisions in the plantae? What is the basis for these divisions?

Ans-

5. How are the criteria for deciding divisions in plants different form the criteria for deciding the subgroups among animals?

Ans-

6. Explain how animals in Vertebrata are classified into further subgroups.

Ans-