MHT CET Medical202624 April 2026Evening ShiftBiologySexual Reproduction in Flowering PlantsActual
Match the structures in the Angiospermic embryosac in List I with their correct ploidy levels in List II . List I (Structures in the Angiospermic embryosac) List II (Ploidy levels) (A). Definitive nucleus (I). n (B). Synergid (II). 3n (C). Primary Endosperm Nucleus (III). 2n Choose the correct answer from the options given below:
Options
- A(A) - (I), (B) - (II), (C) - (III).
- B(A) - (III), (B) - (I), (C) - (II).
- C(A) - (II), (B) - (III), (C) - (I).
- D(A) - (III), (B) - (II), (C) - (I).
Correct answer
B. (A) - (III), (B) - (I), (C) - (II).
Step-by-step solution
The definitive nucleus, also known as the secondary nucleus, is formed by the fusion of two haploid polar nuclei before fertilization. Thus, its ploidy level is 2n . Synergids are cells present in the egg apparatus of the embryo sac and are formed by mitotic divisions of the functional megaspore. Thus, their ploidy level is n . The Primary Endosperm Nucleus (PEN) is formed during double fertilization by the fusion of a haploid male gamete ( n ) with the diploid definitive nucleus ( 2n ). Thus, its ploidy level is 3