NEET 2017 · BiologyAves MammaliaPrevious Year Question
Which among these is the correct combination of aquatic mammals?
Answer: (C) Whales, Dolphins, Seals. Answer: Whales, Dolphins and Seals are all aquatic mammals.
- A.Seals, Dolphins, Sharks
- B.Dolphins, Seals, Trygon
- C.Whales, Dolphins, Seals✓
- D.Trygon, Whales, Seals
Correct Answer
(C) Whales, Dolphins, Seals
Solution & Explanation
Answer: Whales, Dolphins and Seals are all aquatic mammals. Solution: Whale (Balaenoptera) and dolphin (Delphinus) are mammals adapted to live in water, and seals are also mammals. Sharks and Trygon (sting ray) are cartilaginous fishes (Chondrichthyes), not mammals, so the other combinations are wrong. NCERT Reference: Page 51, lines 9-13 (Mammalia examples incl. Delphinus, Balaenoptera); Page 48, line 12 (Trygon is Chondrichthyes)
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