The option that CORRECTLY identifies the process of osmoregulation (water intake andexcretion of salts) in marine bony fishes is
Correct answer: B. B
- A. A
- B. B
- C. C
- D. D
Explanation
Marine animals are constantly battling dehydration due to the hypertonic environment of seawater. They counteract this by drinking large quantities of water and actively excreting excess salts through their gills. Option B is correct. All other options give wrong combinations.
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About Kidney and Urinary System
The kidney and urinary system remove nitrogenous wastes, regulate water and ion balance, and help maintain blood pH through filtration, selective reabsorption and secretion. Questions cover nephron structure, ultrafiltration, the loop of Henle, collecting ducts, urine formation and the roles of ADH and aldosterone, while distinguishing excretion from egestion.
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