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Question

Why top-level consumers are most affected by biological magnification in a food chain?

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

They accumulate the highest concentration of toxins through the food chain

Biological magnification is the increase in the concentration of non-biodegradable toxins, such as pesticides, at each higher level of a food chain.

Top-level consumers eat many organisms from the levels below, each carrying toxins, so they accumulate the highest concentration.

Hence, the answer is that they accumulate the highest concentration of toxins through the food chain.

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