Biology, asked by MikaelAnsari, 1 year ago

Difference between Gills and book gills

Answers

Answered by Anjali9792

Although they have a similar book-like structure, book gills are found externally, while book lungs are found internally. Book gills are still found in horseshoe crabs, which have five pairs of them, the flap in front of them being the genital operculum which lacks gills.

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