The lungs of lungfish are thought to have evolved from _.
Correct answer: B. The swimbladder of bony fish
- A. The swimbladder of cartilaginous fish
- B. The swimbladder of bony fish
- C. The swimbladder of lobe-finned fish
- D. They evolved independently
Explanation
Lungfish have lungs that are derived from the swim bladder (an organ used for buoyancy in most bony fishes), which is connected to the alimentary tract.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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