ANIMAL PHYSIOLOGY
OSMOREGULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it was stressed and needed more time to acclimate to the new conditions
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it was so hyperosmotic to the fresh water that it could not osmoregulate
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the sea star’s kidneys could not handle the change in ionic content presented by the fresh water.
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its cells dehydrated and lost the ability to metabolize
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Detailed explanation-1: -A marine sea star was mistakenly placed in freshwater and it died. What is the most likely explanation for its death? The sea star is hyperosmotic to the freshwater, and it could not osmoregulate.
Detailed explanation-2: -Sweat glands are used to regulate temperature and remove waste by secreting water, sodium salts, and nitrogenous waste (such as urea) onto the skin surface.
Detailed explanation-3: -The sea star is hyperosmotic to the freshwater, and it could not osmoregulate. Organisms categorized as osmoconformers are most likely A) found in fresh water lakes and streams.
Detailed explanation-4: -Mammals excrete nitrogenous waste as urea. It is less toxic and comparatively less soluble in water. Birds and reptiles excrete nitrogenous waste as uric acid.