[Campbell Biology P.1043] According to the introductory text, under which specific conditions... | Practice Question

According to the introductory text, under which specific conditions would a mammal typically produce a large volume of hypoosmotic urine?

  • A: High salt intake and low water availability.
  • B: Scarce salt and high fluid intake.
  • C: Normal water and salt balance.
  • D: Excessive urea production.

Explanation

The introductory paragraph states: 'If salt is scarce and fluid intake is high, the kidney can instead eliminate the excess water with little salt loss by producing large volumes of hypoosmotic urine.' This directly corresponds to the conditions described in option B.