Official Answer Key & Detailed Solution
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Official UPSC Answer KeyUPSC Prelims 1998 • Science and Technology
Correct Answer: Option (B) — A-4; B-1; C-3; D-2
Concept & Option Breakdown
Standard Reference Verified- A. Fruit develops from the Ovary (4): Following fertilization, the post-fertilization ovary matures into the fruit.
- B. Seed develops from the Ovule (1): Fertilized ovules develop into seeds containing the plant embryo.
- C. Wood originates from the Stem (3): Secondary xylem formed in dicot stems constitutes commercial wood.
- D. Starch is synthesized in the Leaf (2): Photosynthetic leaves produce glucose which is stored as starch granules in chloroplasts.
Elimination Heuristic & Exam Approach
Pairing basic plant anatomy: A (Fruit) -> 4 (Ovary) immediately narrows the choices down to (b) and (d). Matching B (Seed) -> 1 (Ovule) unequivocally selects (b).
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