Question

Which of the following is correct with respect to salt balance in body?

• 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. Paramoecium discharges concentrated salt by contractile vacuole
• D. Body fluids of fresh water animals are generally hypotonic to surrounding water

Answer 1

The correct option is A When water is not available, camels do not produce urine but store urea in tissues

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.

So, the correct option is 'When water is not available, camels do not produce urine but store urea in tissues'.