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Excretory Products And Their Elimination

Question
CBSEENBI11025026

Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

  • when water is not available camels do not produce urine but store urea in tissues.

  • Salmon fish excretes lot of stored salt through gill membrane when in fresh water

  • Paramecium discharges concentrated salt solution by contractile vacuoles

  • The body fluids of fresh water animals are generally hypotonic to surrounding water

Solution

A.

when water is not available camels do not produce urine but store urea in tissues.

The balance of water and salt is essential in order to maintain the health of an animal or humans. 

Camels, excrete highly concentrated urine to conserve water. They do not sweat till body temperature rises about 55€-60C. Camel can also tolerate desiccation upto 40% cellular content.