Highest Frequency NEET Questions (REP-01)

1. Endosperm Ploidy (Asked almost every alternate year) Standard question: "The endosperm in angiosperms is _____ (ploidy)." Standard trap: diploid (2n). Correct: triploid (3n). Variation: Numerical calculation — "If 2n=14, chromosome number in endosperm = ?" Answer: 3n = 21.

2. Embryo Sac Structure (High frequency) "The mature embryo sac is _____ celled and _____ nucleate." Answer: 7-celled, 8-nucleate. Trap: students say 8-celled.

3. Geitonogamy vs Xenogamy (Assertion-Reason format) Common A/R: "Geitonogamy promotes genetic variation. It is cross-pollination." Answer: A false, R partially true — geitonogamy is ecologically cross, genetically self, no variation.

4. Double Fertilization Events "What are the two events in double fertilization?" Answer: Syngamy (sperm + egg = 2n zygote) and triple fusion (sperm + 2 polar nuclei = 3n PEN).

5. Post-Fertilization Fates "Ovary becomes _____ and ovule becomes _____." Answer: Ovary → fruit; ovule → seed.

6. Filiform Apparatus "The filiform apparatus is found in _____." Answer: Synergids (not antipodals, not egg cell).

NEET Question Pattern by Difficulty

• Easy (direct fact): sporopollenin location, embryo sac count, pollen layers
• Medium (application): identify pollination type from scenario, ploidy calculations
• Hard (A/R, multi-step): geitonogamy genetic nature, apomixis vs parthenocarpy distinction, tetraploid calculations