Bony fish have some physiological adaptations which enable them to live in sea water.The adaptation in glomerular filtration rate and the function of the salt secretory cells in the gills of these fish is
Correct answer: B. B
- A. A
- B. B
- C. C
- D. D
Explanation
Bony fish have adapted to seawater by decreasing their glomerular filtration rate to conserve water and using specialized cells in their gills to excrete excess salt. So option B is correct. All other options do not give the correct set of adaptations.
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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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