Q39 / 200 · NEET 2023 (All India) · Botany

In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are: 

  • A
    Synergids, antipodals and Polar nuclei
  • B
    Synergids, Primary endosperm nucleus and zygote
  • C
    Antipodals, synergids, and primary endosperm nucleus
  • Correct answer
    D
    Synergids, Zygote and Primary endosperm nucleus

Solution

Synergids are pairs of haploid cells present at the micropylar end of embryo sac. Zygote which is a diploid structure undergoes divisions to form an embryo. Antipodal and polar nuclei are also haploid in nature. Primary endosperm nucleus is triploid in nature. In a fertilized embryo sac the haploid, diploid and triploid structures are synergid, zygote and primary endosperm respectively.

Hence, the correct answer is option: 'D'.

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