NEETBotanySexual Reproduction in Flowering Plants
Match List-I with List-II regarding the structures in an angiosperm embryo sac and their genetic configurations. List-I List-II A. Antipodal cell I. (n + n) B. Polar nuclei II. (3n) C. Zygote III. (n) D. Primary Endosperm Nucleus IV. (2n) Choose the correct answer from the options given below:
Options
- AA-III, B-I, C-IV, D-II
- BA-III, B-IV, C-I, D-II
- CA-III, B-I, C-II, D-IV
- DA-IV, B-I, C-III, D-II
Correct answer
A. A-III, B-I, C-IV, D-II
Step-by-step solution
In an angiosperm embryo sac, different cells and nuclei have specific ploidy levels based on their formation. Antipodal cells are formed by mitotic divisions of the functional haploid megaspore, so they are haploid (n) . The central cell initially contains two distinct haploid nuclei called polar nuclei, representing an (n + n) configuration before they fuse. The zygote is formed by syngamy (fusion of a haploid male gamete with a haploid egg cell), making it a diploid (2n) structure. The Primary Endosperm Nucleus (