2006-11-28 20:52:15 · 6 answers · asked by digimon_girl_13 1 in Science & Mathematics ➔ Biology
this is because gills of fish need a water flow through it so that the exchange of gasoues can occur
2006-11-28 21:02:34 · answer #1 · answered by f1fanz 2 · 0⤊ 0⤋
Gills of the fish can only breath oxygen in water. Not from the Air as Humans and Animals do.
2006-11-28 20:59:31 · answer #2 · answered by Praveen 1 · 0⤊ 0⤋
because the gills stick together and therefore have no access to air.
The gills are what the fish use to "breathe"- they work OK so long as water keeps passing through them- which means it "combs" through the gills allowing for the oxygen exchange. When out of the water the humid gills stick together and the fish has no mechanism to pump the air through the gills to effect the oxygen exchange.
2006-11-28 21:02:42 · answer #3 · answered by cp_scipiom 7 · 0⤊ 0⤋
Fishes absorb oxygen present in water, this is accomplished by the gills!. Fishes cannot breath the gaseous oxygen present in the atmosphere
2006-11-28 21:01:44 · answer #4 · answered by Mithun K 1 · 0⤊ 0⤋
The gills are the processors of oxygen from water and do not function properly in open air----much in reverse of what human lungs experience when filled with water---they are not suited for that type of processing !
2006-11-28 21:08:05 · answer #5 · answered by Anonymous · 0⤊ 0⤋
fishes absorb the dissolved oxygen from the water.
they cannot breathe the gaseous oxygen in free state
2006-11-28 21:03:24 · answer #6 · answered by Anonymous · 0⤊ 0⤋