A) It drinks copious amounts of water, excretes only small amounts of water, and pumps sodium out of the body.
B) It drinks little water, excretes large amounts of water, and pumps sodium into the body.
C) It drinks little water, excretes only small amounts of water, and pumps sodium out of the body.
D) None of the above
Correct Answer: A
Solution :
[a] Marine fishes live in an environment in which salts try to enter the body and water leave the body. To counter these effects marine fishes drink lots of water, excrete small amounts of waters and actively pump sodium out of the body across the gills.
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