Which of the following statements about fishes is incorrect?
Some fishes, such as sharks (cartilaginous fishes), exhibit internal fertilization, not external.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
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Which of the following statements about fishes is correct?
Cartilaginous fishes (Chondrichthyes) lack an operculum and instead have gill slits for respiration.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
Which of the following statements about fishes is incorrect?
Most fishes breathe through gills, not lungs, though some, like lungfish, have specialized respiratory adaptations.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Phylum Hemichordata and Chordata - Protochordata
Which of the following statements about fishes is correct?
Cartilaginous fishes lack an operculum and instead have gill slits for respiration.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Basis of Classification - Symmetry Coelom Segmentation