Q. Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?
A) When water is not available camels do not produce urine but store urea in tissues
B) Salmon fish excretes lot of stored salt through gill membrane when in fresh water
C) $Paramecium$ discharges concentrated salt solution by contractile vacuoles
D) The body fluids of freshwater animals are generally hypotonic to surrounding water
Explanation
Camel is called as ‘Ship of Desert’ due to its adaptations for xerophytic environment. Camel excretes a highly concentrated urine to conserve water and can also tolerate desiccation up to 40% cellular content.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.