Biology, asked by jithumon, 1 year ago

differences between lungs and booklungs

Answers

Answered by GauriPadukon

is believed that book lungs evolved from book gills. Although they have a similar book-like structure, book gills are found externally, while book lungsare found internally. ... Book gills are flap-like appendages that effect gas exchange within water and seem to have their origin as modified legs.

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