i need to know if birds are an amphibians?same with sharks
2007-02-11 04:42:35 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
According to historical research, birds are closer to reptiles than they are to amphibians.
Amphibians are characterized by living part of there lives in water as water creatures with gills. then by some form of metamorphosis (changing) they develop lungs as live on land. Some still live there entire lives NEAR the water.
So although birds may live near water and feed from it, they dont metamorphose, and have one "form" there entire life.
As for sharks, they have swim bladders characterized by fishes. They dont have lungs, (which are a vital organ for mammals. Although some bear live young, most dont provide maternal care.
Sharks live under water for there entire life, and never need to come up for air. If you notice, whales and other sea mammals are mostly near the surface of the sea, so they can get air. And sometimes young sea mammals drown. Sharks cant drown.
2007-02-11 05:11:04 · answer #1 · answered by aquaticneko 2 · 1⤊ 1⤋
Amphibians live part of their life in the water and part on land - so birds are not amphibians. Sharks are fish not mammals.
2007-02-11 12:46:14 · answer #2 · answered by rscanner 6 · 0⤊ 0⤋
Each is in its own category. Birds are closer to reptiles then amphibians, but are not reptiles themselves with a host of differences ranging from bone densities to feathers. Sharks are fish, while dolphins and whales are mammals.
2007-02-11 14:41:20 · answer #3 · answered by mateo 1 · 1⤊ 1⤋
Birds are birds not amphibians. I'm not aware of any flying amphibians.
Sharks are not mammals, they are fish.
Whales are mammals.
2007-02-11 12:46:20 · answer #4 · answered by Vegan 7 · 1⤊ 0⤋
birds are an amphibians same with sharks fin soup is as delicious as duck soup.
2007-02-11 12:46:18 · answer #5 · answered by ihatea c 3 · 0⤊ 3⤋
birds are bird mainly because of the gizzard in their digestive tract, and feathers. sharks are fish as the have gills, not lungs, and their skeleton is made of cartilage.
2007-02-11 13:10:26 · answer #6 · answered by Falcon Man 3 · 0⤊ 1⤋
No and no.
2007-02-11 12:45:43 · answer #7 · answered by Omni D 5 · 0⤊ 0⤋