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Which of the following fish drink large amount of seawater and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

Correct answer: C. Bonyfish

  • A. Hagfish
  • B. Freshwater fish
  • C. Bonyfish
  • D. Cartilaginous fishes

Explanation

Option B is correct.Bony fishes live in marine ecosystems and they do not have specialised organs to cope up with extreme salty environments. They use this mechanism to maintain homeostasis.

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About Homeostasis

Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.

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