What is common to whale, seal and shark?

What is common to whale, seal and shark?
  1. thick subcutaneous fat
  2. convergent evolution
  3. homoiothermy
  4. seasonal migration.

Solution

The analogous organs show convergent evolution due to similar adaptation. They do not support organic evolution. Distantly related animals (whale, seal and shark) inhabiting similar habitats of tendevelop similar morphological features which make them look similar. This is termed adaptive convergence or convergent evolution.

Asked in: NEET 2007

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