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Pristis (Sawfish) belongs to class Chondrichthyes and has a cartilaginous skeleton. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.
Chondrichthyes (cartilaginous fishes) do not have an operculum (gill cover); it is a feature of bony fishes (Osteichthyes).
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
Scoliodon (dogfish) is a cartilaginous fish belonging to class Chondrichthyes.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
Pristis (Sawfish) belongs to class Chondrichthyes and has a cartilaginous skeleton.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
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