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UP CPMTUP CPMT 2010Sexual Reproduction in Flowering Plants
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Solution:
In angiosperms, the female gametophyte is called embryo sac. Embryo sac is an oval multicellular haploid structure which is embedded in the nucellus towards micropylar half of the ovule. It is covered over by a thin membrane derived from the parent megaspore wall. It contains 8 nudei but 7 cells - 3 micropylar, 3 chalazal and one central.