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Question: Answered & Verified by Expert
In a fertilised embryo sac, the haploid, diploid and triploid structures are:
BiologySexual Reproduction in Flowering PlantsNEET
Options:
  • A Antipodal, zygote and primary endosperm nucleus
  • B Synergid, antipodal and polar nuclei
  • C Antipodal, synergid and primary endosperm nucleus
  • D Synergid, polar nuclei and zygote
Solution:
2638 Upvotes Verified Answer
The correct answer is: Antipodal, zygote and primary endosperm nucleus
Embryo sac is made up of 7 cells. Three antipodal cells, one central cell, two synergids and one egg cell. These antipodal cells are haploid and they degenerate after fertilization, central cell bear two haploid nuclei and post second fertilization central cell becomes triploid endosperm. Egg cell after first fertilization becomes diploid zygote whereas synergids always remain haploid.

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