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12 Biology Organisms and Populations - Set No : 21 Question No :3

Question No : 3
               The organism which tolerate wide range of salinity called …A…II. The organism which tolerate narrow range of salinity called …B…Choose the correct option for A and B     

                a)          A–stenohaline; B–euryhaline          b)          A–euryhaline; B–stenohaline     

                c)          A–isohaline; B–euryhaline          d)          A–heterohaline; B–isohaline     

Answer No : 3
     (b)Some organisms are tolerant to wide range of salinities called euryhaline,  salmon fish but others are restricted to narrow range called stenohaline like shark and string rays. Many freshwater animals cannot live for long in sea water and vice-versa because of the osmotic problems they would face     

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