1.

Question : A: Biological magnification means increasing concentration of some toxic substance at various trophic levels of a food chain of organisms. R: Concentration of DDT water is 0.003 ppm.

Answer»

Both ASSERTION and Reason are TRUE and Reason is a correct explanation of the Assertion.
Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
Assertion is true but Reason is FALSE.
Assertion is false but Reason is true. 

Answer :C


Discussion

No Comment Found