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Question

Which class has the largest number of animal, insects or fish?


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Solution

Class Insecta :

  1. Arthropoda is the largest phylum in the animal kingdom.
  2. It accounts for about 80% of known animal species.
  3. It includes animals such as crabs, insects, lobsters and mites.
  4. In terms of number of species, insects represents about more than 1 million species of the world, studied till now.
  5. Hence, class Insecta have the largest number of species.
  6. It constitutes about 40% of all known species.
  7. The body is divided into head, thorax and abdomen and has an exoskeleton made up of chitin.
  8. They have an open circulatory system and are generally triploblastic.

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