← All questionsGS3 · 2016 · Agriculture ·Allelopathy
QUESTION 8
GS3
12.5 marks

What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.

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9 min
200 words
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What the examiner wants

Discuss the exact proposition in the PYQ — “What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.” — using concept/chronology or mechanism, evidence on both sides where relevant, and a conclusion that answers the directive rather than merely describing Allelopathy.

DiscussExplain the different sides of the issue, use evidence, and finish with a balanced view.

Demand-wise check

  1. 1For the prompt cue ‘What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.’, directly answer: Discuss its role in major cropping systems of irrigated agriculture≈45 words
  2. 2For the prompt cue ‘What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.’, build the causal/institutional mechanism behind Allelopathy, not just a list of features≈45 words
  3. 3For the prompt cue ‘What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.’, add one verified official-source anchor and a limitation/counterpoint specific to Allelopathy≈45 words

Open in about 30 words and close in about 30.

Answer plan

Define/contextualise AllelopathyExplain mechanism/chronologyQuestion-specific evidence/examplesImplicationsConcise conclusion

Where marks usually go

  • For the prompt cue ‘What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.’, avoid a generic note on Allelopathy; answer the actual wording/directive and the Allelopathy proposition
  • For the prompt cue ‘What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture.’, do not add examples around Allelopathy unless they prove, qualify or rebut the proposition asked

Value addition

  • 3-box flow: concept/context → core argument/evidence → implication/way forward
    → Draw it in the body, next to the point it supports.

Official source anchors

These are authoritative sources selected for this exact PYQ. Where a card is an official-domain anchor rather than a fact-level citation, verify the precise provision, definition or data point on the linked source before using it.