CBSE Class 9 Answered
give reasons:(a) when the fish is kept in sea water then it is transferred to fresh water why does the fish die?(b) when the fish is taken from fresh water to sea water,what will happen to fish?
Asked by nisha_vini29 | 15 May, 2015, 08:15: PM
Expert Answer
(a) The sea water fish is also a salt water fish. So, when it is transferred to fresh water, osmosis occurs. Water enters the cell, diluting the salt concentration inside, resulting in bursting of the cell. So, unfortunately, cell will stop working and the fish will die.
(b) When the fish is taken to sea water, the reverse process occurs. Water comes out of the cell due to the process of exosmosis, disrupting the cell. So, it leads to dehydration of fish and ultimately death of the fish.
Answered by Sivanand Patnaik | 18 May, 2015, 08:12: AM
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