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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Which of the following is not the feature of a cartilaginous fish?

Options

  1. ABilaterally flattened body
  2. BAbsence of operculum
  3. CCopulatory organ present
  4. DViviparity

Correct answer

A. Bilaterally flattened body

Step-by-step solution

Features related to Class Chondrichthyes (Cartilaginous fishes) are: 1. Endoskeleton is cartilaginous. 2. Mostly marine. 3. Usually dorsoventrally flattened. 4. The mouth is ventral. 5. Usually 5 - 7 pairs of gills without operculum (gill cover). 6. Placoid scales found. 7. Ureotelic. 8. Claspers present on pelvic fins. 9. Internal fertilization. 10. Mostly viviparous.

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