1(viii)
Hari is fond of watching the fish in an aquarium. So, he set up an aquarium in his house. Along with a number of fresh water fish, he also placed a clown fish which is a salt water fish. After few hours, the clown fish was found dead and floating on water. This was due to:
- (a)Endosmosis
- (b)Exosmosis
- (c)Osmoregulation
- (d)Excretion
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Endosmosis
Reason — The salt water fish have more salt in their body cells. When these fish are kept in fresh water the water flows into their cells due to endosmosis. Consequently their cells swell and they die.