Question Detail
Question
The Gangetic dolphin differs from the marine dolphin by having
Correct Answer
Option A is the correct answer.
Detailed Explanation
The Gangetic dolphin (Platanista gangetica), also known as the South Asian river dolphin, has a long, toothed beak that is characteristic of the species. It differs from marine dolphins by having very poor eyesight (nearly blind, relying on echolocation), a dorsal ridge rather than a paired dorsal fin, and flippers that are not particularly miniature. The toothed beak is a distinguishing feature.
Hint
This river dolphin species is characterized by its long, slender snout and reduced eyesight.