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GS Paper IUPSC Prelims 2018
Biodiversity & Conservation
Question No. 212Interactive Test Mode
00:00
+2-0.66

Q212. Why is a plant called Prosopis juliflora often mentioned in the news?

Why is a plant called Prosopis juliflora often mentioned in the news?

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 2018 • Environment and Ecology

Correct Answer: Option (B) — It tends to reduce the biodiversity in the area in which it grows.

Concept & Option Breakdown

Standard Reference Verified

Prosopis juliflora (commonly known as Vilayati Kikar or Mesquite) is an invasive alien shrub native to South and Central America. Introduced to India for fuelwood and greening arid lands, it has spread aggressively, outcompeting native vegetation, depleting groundwater tables, and sharply reducing local biodiversity.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2018 (Q212)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicEnvironment and Ecology → Biodiversity & Conservation
Official Answer KeyOption (B) — It tends to reduce the biodiversity in the area in which it grows.

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Frequently Asked Questions — UPSC Prelims 2018 Q212

What is the official answer for UPSC Prelims 2018 GS Paper I Question 212 (Environment and Ecology)?

The official UPSC answer key for this 2018 Environment and Ecology (Biodiversity & Conservation) question is Option (B): "It tends to reduce the biodiversity in the area in which it grows.". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2018 question belong to?

This question belongs to GS Paper I under the subject "Environment and Ecology" and micro-topic "Biodiversity & Conservation". You can explore all repeated questions from Biodiversity & Conservation 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 Biodiversity & Conservation UPSC Prelims question using option elimination?

To solve Biodiversity & Conservation 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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