2007-01-20 14:03:58 · 11 answers · asked by girly#1 2 in Science & Mathematics ➔ Other - Science
every one is saying different answers!
2007-01-20 14:09:23 · update #1
Of course tadpoles can breathe underwater.
-- They have no EXTERNAL gills, but they have gills inside.
-- I put a website reference below so you can see that this is true.
-- I have seen tadpoles in ponds, mud puddles, and swimming pools. They swim and lay on the bottom, and they don't surface to breathe air.
These facts are true for the tadpoles of both frogs and toads.
http://www.answers.com/topic/tadpole
2007-01-20 14:15:04 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
Yes, they can.
When they first hatch, tadpoles have 3 pairs of external gills; however, these are soon covered with the body wall and become internal. So, during most of their larval life, tadpoles rely on these internal gills for breathing. The gills are not visible, but there's a hole in the tadpole's trunk for outflow of respiratory water.
Now, frog metamorphosis is a gradual process; the organ systems of the adults don't appear all of a sudden. So, as the tadpoles continue to grow, the lungs that they will use when they're adults start to develop. Eventually, advanced tadpoles start using their lungs and go to the surface of the water for air. You can see this if you observe tadpoles that already have developed fore- and hind-limbs.
By the time they're ready for the metamorphic crisis (a short period of major changes), they rely mostly on their lungs, because the gills have been reabsorbed.
2007-01-20 15:08:18 · answer #2 · answered by Calimecita 7 · 0⤊ 0⤋
Tadpoles have gills & during this stage they 'breathe' like a fish, by passing oxygenated water through their gills and absorbing the oxygen from the water. Later as they start to mature into adult Frogs the transition between gill and lung develops where you will see them come to the surface and gulp air. Eventually, they will need air to breath as an adult frog.
2007-01-20 15:40:50 · answer #3 · answered by RHJ Cortez 4 · 0⤊ 0⤋
Yes, the tads breathe with gills. They have no lungs, but need oxygen. The gills harvest oxygen from the water, to keep them and the fish alive and well, until they become adults. As adults, the gills are gone, but then they have lungs instead...When hibernating in winter, they dig into the ground, and they can breathe in oxygen through their skin, also.
2007-01-20 14:07:31 · answer #4 · answered by XCoSkiGirl1 2 · 0⤊ 0⤋
Tadpoles. Yes. Before they grow their first front leg, they have gills, and "breathe" the water they live in.
2007-01-20 15:51:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yes, it has gills to breathe under water.
2007-01-20 14:42:41 · answer #6 · answered by moosa 5 · 0⤊ 0⤋
I think they have gills, then when they mature into frogs they have to rely on gulps of air before going under water.
2007-01-20 14:06:58 · answer #7 · answered by Absynthe 1 · 0⤊ 0⤋
That;s what you get for asking a question to the general public. Learn to use search engines. Learn to use Wikipedia and About.com:
http://en.wikipedia.org/wiki/Tadpole
2007-01-20 15:42:14 · answer #8 · answered by arbiter007 6 · 0⤊ 0⤋
No, dolphins are mammals. they could pass up for water in any different case they'll drown. they could carry their breathe for a protracted time nonetheless. did you recognize that they sleep with one eye open so they could arise for air?
2016-10-31 21:15:02 · answer #9 · answered by canevazzi 4 · 0⤊ 0⤋
they dont have gills so no
2007-01-20 14:06:58 · answer #10 · answered by thatguy 4 · 0⤊ 0⤋