Fundamentholfundamenthol
NEET2023Biology
Q.

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

  1. A

    Synergids, Primary endosperm nucleus and zygote

  2. B

    Antipodals, synergids, and primary endosperm nucleus

  3. C

    Synergids, Zygote and Primary endosperm nucleus

  4. D

    Synergids, antipodals and Polar nuclei

Solution

Synergids are unfused haploid gametophyte cells. The zygote, formed by fusion of one male gamete (n) with the egg (n), is diploid. The primary endosperm nucleus arises from triple fusion — one male gamete (n) with the two polar nuclei (n + n) — and is therefore triploid.

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