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Question

Most important criteria used for the present day classification of living organisms is based on
  1. Presence and absence of notochord
  2. Resemblances in external features
  3. Breeding habit
  4. Anatomical and physiological characteristics

A
Resemblances in external features
B
Breeding habit
C
Presence and absence of notochord
D
Anatomical and physiological characteristics
Solution
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Taxonomy is a branch of biology, which deals with the study of the collection, identification, nomenclature and classification of living organisms. The basis of classification is by the comparison of the similarities and differences of the morphological, anatomical, physiological and some other characteristics of the organism.
Thus, the correct answer is option D.

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