Compare sharks and bony fishes in regard to how they ingest their food. In your answer, discuss how both the position of the mouth and the presence of a gill cover confers a feeding advantage to bony fish
What will be an ideal response?
When sharks ingest prey items, they must make full contact with the prey before they can begin to bite down on it. This is because sharks lack a gill cover, which could otherwise be used to create negative pressure within the mouth of the shark and which would draw the prey item in without having to actually bite down on the prey. Bony fishes, with their well developed operculum and protrusible jaws, can suck in prey items without having to bite down on them. Furthermore, because of the ventral placement of the mouth in sharks, they lose site of their prey in the last crucial moments before they bite their prey, which could end in an escape by the prey. Most bony fishes, on the other hand, have terminal mouths, which means they have their prey in sight until it enters their mouth. Obviously, the way in which bony fishes feed is more efficient than that of sharks.
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