Page No 85: - 7) DIVERSITY IN LIVING ORGANISMS

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Question 1:

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

Answer:

The criterion for the classification of organisms belonging to kingdom Monera or Protista is the presence or absence of a well-defined nucleus or membrane-bound organelles. Kingdom Monera includes organisms that do not have a well-defined nucleus or membrane-bound organelles and these are known as prokaryotes. Kingdom Protista, on the other hand, includes organisms with a well-defined nucleus and membrane-bound organelles and these organisms are called eukaryotes.

Question 2:

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

Answer:

Kingdom Protista includes single celled, eukaryotic, and photosynthetic organisms.

Question 3:

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?

Answer:

In the hierarchy of classification,a species will have the smallest number of organisms with a maximum of characteristics in common, whereas the kingdom will have the largest number of organisms.