Oviparous vs Viviparous Mammals — NEET Biology
✅ Asked in NEET 2017Examples: Oviparous-Ornithorhynchus (Platypus); Viviparous - Macropus (Kangaroo), Pteropus (Flying fox), Camelus (Camel), Macaca (Monkey), Rattus (Rat), Canis (Dog), Felis (Cat), Elephas (Elephant), Equus (Horse), Delphinus (Common dolphin), Balaenoptera (Blue whale), Panthera tigris (Tiger), Panthera leo (Lion).
NTA tests whether students understand that mammals include both egg-laying (oviparous) species like platypus and live-bearing (viviparous) species like dolphins and whales. The common trap is believing all mammals are viviparous and give birth to live young—but monotremes like platypus lay eggs despite being mammals. Another mistake is not recognizing aquatic mammals like dolphins and whales as true mammals, which contradicts the typical "land animal" misconception. To answer correctly, remember that mammals are defined by having hair/fur, mammary glands, and specialized teeth—not by reproduction method. Dolphins and whales breathe air, nurse their young, and have all mammalian features despite living in water.
Which among these is the correct combination of aquatic mammals? NEET Year: NEET 2017
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