Official Answer Key & Detailed Solution
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Correct Answer: Option (C) — 1, 2 and 4 only
Concept & Option Breakdown
Standard Reference VerifiedStatement 1 is correct: Drought-tolerant GM crops (e.g., DroughtGard maize) have been created to survive water scarcity. Statement 2 is correct: Biofortified GM crops enhance nutritional value (e.g., Golden Rice enriched with beta-carotene/pro-vitamin A). Statement 3 is incorrect: Space crop research primarily focuses on environmental chambers, lighting, and hydroponics rather than genetic engineering specifically aimed at extraterrestrial photosynthesis. Statement 4 is correct: Transgenic modifications have been deployed to delay ripening and extend shelf life (e.g., Flavr Savr tomato via antisense technology against polygalacturonase).
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