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AIIMS2018ZoologyStructural Organisation in Animals

Presence of gills in the tadpole of frog indicates that

Options

  1. Afishes were amphibious in the past
  2. Bfishes evolved from frog-like ancestors
  3. Cfrogs will have gills in future
  4. Dfrogs evolved from gilled ancestors.

Correct answer

D. frogs evolved from gilled ancestors.

Step-by-step solution

The tadpole larva of frog bear gills and lives in water, this proves that frogs have evolved from gilled ancestors.

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