Question

Arrange the stages of biomagnification of DDT.
(A) Fish eating birds (PPT 25 PPm)
(B) Small fish (DDT 0.5 PPm)
(C) Zooplankton (DDT 0.04 PPm)
(D) Water (DDT 0.003 PPm)
(E) Large fish (DDT 2 PPm)
Choose the correct answer from the options given below:

• A. \((B)→(C)→(E)→(A)→(D)\)
• B. \((D)→(C)→(B)→(E)→(A)\)
• C. \((D)→(B)→(C)→(E)→(A)\)
• D. \((E)→(D)→(B)→(C)→(A)\)

Answer 1

The Correct Option is B

The correct order of stages of biomagnification of DDT is as follows:

(D) Water (DDT 0.003 PPm) - Lowest concentration at the base of the food chain.
(C) Zooplankton (DDT 0.04 PPm) - Higher concentration compared to water.
(B) Small fish (DDT 0.5 PPm) - Further biomagnification as small fish consume zooplankton.
(E) Large fish (DDT 2 PPm) - Higher concentration as large fish consume smaller fish.
(A) Fish-eating birds (PPT 25 PPm) - Highest concentration as birds consume large fish.

So, the correct option is (B): \((D)→(C)→(B)→(E)→(A)\)