A natural system of classification is based upon

A. natural relationships, reflecting evolutionary relationship

B. morphological similarities between organisms

C. embryologicall, biochemical, phisio-loical and ecological considerations

D. both (b) and (c)

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  18. For finding a haemocoel which animal you will select ?
  19. Taxonomy is the science that deals with the classification of
  20. Natural system of classification has the basis of
  21. The generic name of apple snail is
  22. Which of the following is represented by the largest number of species ?
  23. Sea Stick refers to group
  24. A cuttle fish belongs to
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