NEET2005ZoologyExcretory Products and their EliminationActual
Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?
Options
- Awhen water is not available camels do not produce urine but store urea in tissues.
- BSalmon fish excretes lot of stored salt through gill membrane when in fresh water.
- CParamecium discharges concentrated salt solution by contractile vacuoles.
- DThe body fluids of fresh water animals are generally hypotonic to surrounding water.
Correct answer
A. when water is not available camels do not produce urine but store urea in tissues.
Step-by-step solution
Camel excrete a highly concentrated urine to conserve water. They do not sweat till body temperature rises about 55^ C -60^ C . Camel can also tolerate desiccation upto 40 % cellular content.