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STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 4. Animal kingdom1 Mark
MCQ
Teeth in chondrichthyes are modified
  • ✓
    Placoid scales
  • B
    Cycloid scales
  • C
    Ctenoid scales
  • D
    Rhomboid scales
✓

Answer

Correct option: A.
Placoid scales
a
Chondrichthyes are cartilaginous fishes.
In chondrichthyes, teeth are modified placoid scales which are backwardly directed.

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