Which one of the following statements is correct with respect to...

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

The dwelling place of camels is desert where there is scarcity of water, camel excrete a highly concentrated urine to conserve water. They do not sweat till body temperature rises about

55^{\circ} \mathrm{C}-60^{\circ} \mathrm{C}

. Camels can also tolerate desiccation upto

40 \%

cellular content.

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