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GS Paper IUPSC Prelims 2001
Biotechnology & Genetics
Question No. 27Interactive Test Mode
00:00
+2-0.66

Q27. The American multinational company, Monsanto, has produced an insect-resistant cotton variety that is undergoing field trials in India. A toxic gene from which one of the following bacteria has been transferred to this transgenic cotton?

The American multinational company, Monsanto, has produced an insect-resistant cotton variety that is undergoing field trials in India. A toxic gene from which one of the following bacteria has been transferred to this transgenic cotton?

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 2001 • Science and Technology

Correct Answer: Option (B) — Bacillus thuringiensis

Concept & Option Breakdown

Standard Reference Verified

Option (b) is correct: Bt cotton incorporates delta-endotoxin genes (such as cry1Ac) derived from the soil bacterium Bacillus thuringiensis to confer resistance against lepidopteran pests like the cotton bollworm.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2001 (Q27)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Biotechnology & Genetics
Official Answer KeyOption (B) — Bacillus thuringiensis

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Frequently Asked Questions — UPSC Prelims 2001 Q27

What is the official answer for UPSC Prelims 2001 GS Paper I Question 27 (Science and Technology)?

The official UPSC answer key for this 2001 Science and Technology (Biotechnology & Genetics) question is Option (B): "Bacillus thuringiensis". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2001 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Biotechnology & Genetics". You can explore all repeated questions from Biotechnology & Genetics 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 Biotechnology & Genetics UPSC Prelims question using option elimination?

To solve Biotechnology & Genetics questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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