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  • The highest DDT concentration in aquatic food chain shall occur in

The highest DDT concentration in the aquatic food chain shall occur in

Option 1)  phytoplankton

Option 2)  seagull

Option 3)  crab

Option 4)  eel

Answers (1)

Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolized or excreted, and is thus passed on to the next higher trophic level. This phenomenon is well known for mercury and DDT.

Phytoplankton are primary producers while Seagull is top consumers among the given option that feed on dead or live fishes and will exhibit the highest DDT concentration. 

Therefore, the correct answer is option B.

 

Posted by

lovekush

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