Question

If a water body is contaminated with toxicant, its biomagnification will be more marked in

• A. Plankton
• B. Small fish
• C. Birds
• D. Water

Answer 1

The correct option is C Birds

It is seen that the level of toxicant increases as the food chain progresses. It means, the primary consumers will have more toxicant concentration than the producers, the secondary consumers will have more than primary consumers and so on. The highest concentrations will be seen in the top carnivore. This is because the consumers at the successive trophic level consume more than the previous level to fulfil the energy requirements. Due to this, toxicant keeps on accumulating in the successive trophic levels in higher concentrations. This process is called the biomagnification. So, planktons will have least and birds will have the most toxicant presence.

Hence, the correct answer is 'Birds'.