A marine sea star was mistakenly placed in freshwater and it died. What is the most likely explanation for its death?
A) The sea star was stressed and needed more time to acclimate to new conditions.
B) The sea star is hyperosmotic to the freshwater, and it could not osmoregulate.
C) The osmoregulatory system of the sea star could not handle the change in ionic content presented by the freshwater.
D) The contractile vacuoles used to regulate water content ruptured in the freshwater.
E) The cells of the sea star dehydrated and lost the ability to metabolize.
Correct Answer:
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