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Question No. 197Interactive Test Mode
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Q197. Consider the following crops of India: 1. Cowpea 2. Green gram 3. Pigeon pea Which of the above is/are used as pulse, fodder and green manure?

Consider the following crops of India:

  1. Cowpea
  2. Green gram
  3. Pigeon pea Which of the above is/are used as pulse, fodder and green manure?
Select the correct option below (or cross out options to eliminate)

Official Answer Key & Detailed Solution

Ready to check the official UPSC Answer Key?

Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 2012 • Science and Technology

Correct Answer: Option (A) — 1 and 2 only

Concept & Option Breakdown

Standard Reference Verified

Cowpea (Vigna unguiculata) and Green gram (Vigna radiata) are fast-growing leguminous crops widely cultivated as edible pulses, rich animal fodder, and rapidly decomposing green manure for soil nitrogen enrichment. Pigeon pea (Arhar/Tur) is a long-duration woody shrub primarily grown as a pulse crop; due to its woody stems, slow initial growth, and long maturity cycle, it is not traditionally suited for green manuring.

Elimination Heuristic & Exam Approach

Green manure requires quick vegetative biomass accumulation and soft succulent stems that decompose quickly upon plowing, fitting herbaceous short-duration legumes like cowpea and green gram.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2012 (Q197)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — 1 and 2 only

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Frequently Asked Questions — UPSC Prelims 2012 Q197

What is the official answer for UPSC Prelims 2012 GS Paper I Question 197 (Science and Technology)?

The official UPSC answer key for this 2012 Science and Technology (Health & Medicine) question is Option (A): "1 and 2 only". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2012 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?

Green manure requires quick vegetative biomass accumulation and soft succulent stems that decompose quickly upon plowing, fitting herbaceous shortduration legumes like cowpea and green gram.

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