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GS Paper IUPSC Prelims 2014
Health & Medicine
Question No. 184Interactive Test Mode
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Q184. Which one of the following is the correct sequence of a food chain?

Which one of the following is the correct sequence of a food chain?

Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2014 • Science and Technology

Correct Answer: Option (A) — Diatoms-Crustaceans-Herrings

Concept & Option Breakdown

Standard Reference Verified

Option (a) is correct: Diatoms are microscopic primary producers (phytoplankton), which are eaten by primary consumers such as Crustaceans (e.g., copepods, krill), which are in turn consumed by secondary consumers such as Herrings (small fish).

Elimination Heuristic & Exam Approach

A food chain must start with primary autotrophic producers. Diatoms are phytoplankton (producers), while crustaceans are zooplankton/consumers.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2014 (Q184)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — Diatoms-Crustaceans-Herrings

Related & Repeated Prelims PYQs (1)

Questions from other UPSC Prelims years testing the same or closely linked concept.

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2021 • Q382% Match

Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains

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Frequently Asked Questions — UPSC Prelims 2014 Q184

What is the official answer for UPSC Prelims 2014 GS Paper I Question 184 (Science and Technology)?

The official UPSC answer key for this 2014 Science and Technology (Health & Medicine) question is Option (A): "Diatoms-Crustaceans-Herrings". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2014 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

A food chain must start with primary autotrophic producers. Diatoms are phytoplankton (producers), while crustaceans are zooplankton/consumers.

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