Question

In a fertilized embryo sac, the haploid, diploid and triploid structures are ?

• A. Synergid, zygote and primary endosperm nucleus
• B. Synergid, antipodal and polar nuclei
• C. Antipodal, synergid and primary endosperm nucleus
• D. Synergid, polar nuclei and zygote

Answer 1

The correct option is A Synergid, zygote and primary endosperm nucleus

A. Synergid, zygote and primary endosperm nucleus

Reason: Synergids are pair 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.