Explain the pistil, megasporangium(ovule) and embryo sac.
Answers
Answer:
An ovule generally has a single embryo sac formed from a megaspore through reduction division. Megasporogenesis : The process of formation of megaspores from the megaspore mother cell is called megasporogenesis.
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1. pistel
Pistil, the female reproductive part of a flower. The pistil, centrally located, typically consists of a swollen base, the ovary, which contains the potential seeds, or ovules; a stalk, or style, arising from the ovary; and a pollen-receptive tip, the stigma, variously shaped and often sticky.
2. megasporangium(ovule)
The ovule consists of integument megasporangium. It is a small structure connected to the placenta by means of a funicle. ... The embryo sac also called female gametophyte is present inside the nucellus. The diploid megaspore mother cell undergoes meiosis to form 4 haploid megaspores by the process of megasporogenesis.
3. embryo sac.
the female gametophyte of a seed plant consisting of a thin-walled sac within the nucellus that contains the egg nucleus and other nuclei which give rise to endosperm on fertilization.