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UPSC 1997: Which one of the following organisms is likely to show the highest concentration of DDT once it has been introduced into the ecosystem?
(a)Grasshopper
(b)Toad
(c)Snake
(d)Cattle
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Not attemptedCorrect Answer: (c) Snake
DDT biomagnifies up the food chain; each trophic level accumulates higher residues. Among the given organisms the snake, a tertiary consumer that preys on toads and other secondary consumers, occupies the highest trophic level, so it shows the greatest DDT concentration. ([aspireias.com](https://www.aspireias.com/upsc-general-study-10years-paper/1997?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 1997 Environment & Ecology question?▼
The correct answer is option (c): Snake. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Pollution & Waste Management question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 1997, GS Paper 1, as Question 120. It falls under Environment & Ecology > Pollution & Waste Management.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Pollution & Waste Management?▼
UPSC has asked 38 questions from Pollution & Waste Management (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.