Question

What is meant by a nucellus in gymnosperms?please Explain.

Answer 1

The megasporangium of a seed-bearing plant, located in the ovule. In angiosperms, it is the central portion of the ovule in which the embryo sac develops. In some cases of apomixis (production of seeds without fertilization), cells of the nucellus develop into an embryo.

Answer 2

hi there,
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The haploid megaspore inside thenucellus gives rise to the female gametophyte, called the megagametophyte. In gymnosperms, the megagametophyte consists of around 2000 nuclei and forms archegonia, which produce egg cells for fertilization. ... The large central cell of the embryo sac contains two polar nuclei