In Lungfishes and Indian Climbing Perch,__________ Function as Lungs

Question

In lungfishes and Indian climbing perch,__________ function as lungs.
A)alveoli
B)book gills
C)opercular cavities
D)pneumatic sacs
E)pneumatic ducts

Accepted Answer

Lungfishes and Indian climbing perch have pneumatic sacs that function as lungs allowing them to breathe air in addition to extracting oxygen from water through their gills. Alveoli are present in mammalian lungs, book gills are found in arthropods and some aquatic crustaceans, opercular cavities are associated with the gills of fish, and pneumatic ducts are not a known respiratory structure in any animal.