Question

Elasmobranchs have a ……………… mouth.​

Answer 1

Answer:

six or seven pairs of gills slits

are present in the above fish

so the answer must be 6 or 7

Answer 2

Elasmobranchs have a 5-7 pairs of gills near the mouth.​

Explanation:

• Elasmobranch are any of subclass (Elasmobranchii) of cartilaginous fishes that have five to seven lateral to ventral gill openings on each side and that comprise the sharks, rays, skates, and extinct related fishes.
• Cartilaginous fishes (Chondrichthyes) are divided into two subclasses, elasmobranchs (Elasmobranchii, including sharks, rays and skates) and chimaeras (Holocephali), and their common ancestor diverged from the rest of jawed vertebrates around 450 million years ago.

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