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GS Paper IUPSC Prelims 2003
Health & Medicine
Question No. 385Interactive Test Mode
00:00
+2-0.66

Q385. Consider the following statements: 1. The common blue green algae, Spirogyra and Ulothrix, are found in both freshwater ponds and oceans. 2. The Chameleon can look ahead with one eye, and at the same time look behind with another. Which of these statements is/are correct?

Consider the following statements:

  1. The common blue green algae, Spirogyra and Ulothrix, are found in both freshwater ponds and oceans.
  2. The Chameleon can look ahead with one eye, and at the same time look behind with another.

Which of these statements is/are correct?

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 2003 • Science and Technology

Correct Answer: Option (C) — Both 1 and 2

Concept & Option Breakdown

Standard Reference Verified
  • Statement 1 is correct: Filamentous algae like Spirogyra and Ulothrix are widespread photosynthetic organisms that inhabit both freshwater bodies (ponds, streams) and marine or brackish environments.
  • Statement 2 is correct: Chameleons possess independently mobile eyes capable of rotating 360 degrees independently, allowing them to focus on two distinct fields of view simultaneously (e.g., watching for predators behind while aiming at prey in front).
Elimination Heuristic & Exam Approach

Independent eye movement is a classic biological adaptation specific to chameleons.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2003 (Q385)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — Both 1 and 2

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Frequently Asked Questions — UPSC Prelims 2003 Q385

What is the official answer for UPSC Prelims 2003 GS Paper I Question 385 (Science and Technology)?

The official UPSC answer key for this 2003 Science and Technology (Health & Medicine) question is Option (C): "Both 1 and 2". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2003 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?

Independent eye movement is a classic biological adaptation specific to chameleons.

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