Question

Difference between gills and gill slits

Answer 1

Answer:

Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover. Such gills are characteristic of cartilaginous fish such as sharks, and rays, as well as primitive fish such as lampreys. In contrast, bony fishes have a single outer bony gill covering called an operculum.

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