In general, the egg apparatus of the embryo sac in angiosperms consists of:
One egg cell, two synergids
One egg cell, two synergids, two antipodal cells, three polar nuclei
One egg cell, three synergids, two antipodal cells, two polar nuclei
One egg cell, two synergids, two antipodal cells, two polar nuclei
In a typical angiosperm embryo sac, three cells are grouped together at the micropylar end to form the egg apparatus . this apparatus consists specifically of one egg cell and two synergids . Other components of the mature 7-celled, 8-nucleate embryo sac, such as the three antipodal cells at the chalazal end and the two polar nuclei in the large central cell, are not part of the egg apparatus .
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