Chapter 7. Diversity in Living Organisms

Internal Questions :

1. Why do we classify organisms?

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

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Internal 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?

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

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

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Internal Questions :

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

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

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Internal Questions :

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

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

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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 ?

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Internal Questions :

1. Which division among plants has the simplest organisms?

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2. How are pteridophytes different from the phanerogams?

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3. How do gymnosper ms and angiosperms differ from each other?

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Internal Questions :

1. How do poriferan animals differ from coelenterate animals?

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2. How do annelid animals differ from arthropods?

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3. What are the differences between amphibians and reptiles?

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4. What are the differences between animals belonging to the Aves group and those in the mammalian group?

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Class 9 Diversity in living Organisms Exercises :

1. What are the advantages of classifying organisms?

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

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

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

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

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

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