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Biology · PYQ NEET UG 2016(2)

हिन्दी

Choose the correct statement.

  1. All mammals are viviparous.
  2. All cyclostomes do not possess jaws and paired fins.
  3. All reptiles have a three-chambered heart.
  4. All pisces have gills covered by an operculum.

Correct answer · Option 2

All cyclostomes do not possess jaws and paired fins.

Explanation

Cyclostomes (jawless vertebrates) lack jaws and paired fins. (Mammals like platypus are oviparous; crocodiles have 4-chambered hearts; cartilaginous fishes lack operculum).
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