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GS Paper IUPSC Prelims 2010
Health & Medicine
Question No. 372Interactive Test Mode
00:00
+2-0.66

Q372. Some species of plants are insectivorous. Why?

Some species of plants are insectivorous. Why?

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 2010 • Science and Technology

Correct Answer: Option (B) — They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.

Concept & Option Breakdown

Standard Reference Verified

Insectivorous (carnivorous) plants like Nepenthes, Drosera, and Dionaea carry out photosynthesis, but thrive in acidic, waterlogged, and highly nitrogen-deficient soils (like peat bogs). They capture and digest insect prey to obtain essential mineral nutrients, notably nitrogen and phosphorus.

Elimination Heuristic & Exam Approach

Carnivorous plants are photosynthetic autotrophs for carbon/energy, but trap insects specifically to overcome soil nitrogen deficiency.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2010 (Q372)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.

Related & Repeated Prelims PYQs (2)

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

View Cluster in 3D Graph
2008 • Q38082% Match

Which one of the following is an insectivorous plant?

Science and Technology • Health & MedicineSolve
2007 • Q38282% Match

Which one of the following parts of the pitcher plant becomes modified into a pitcher?

Science and Technology • Health & MedicineSolve

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Frequently Asked Questions — UPSC Prelims 2010 Q372

What is the official answer for UPSC Prelims 2010 GS Paper I Question 372 (Science and Technology)?

The official UPSC answer key for this 2010 Science and Technology (Health & Medicine) question is Option (B): "They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2010 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?

Carnivorous plants are photosynthetic autotrophs for carbon/energy, but trap insects specifically to overcome soil nitrogen deficiency.

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