Q6 of 805 Page 1

A mature embryo-sac in a flowering plant may possess 7-cells, but 8-nuclei. Explain with the help of a diagram only.

In an embryo sac 3 cells are grouped together at the micropylar end and constitutes the Egg apparatus( i.e 2 synergids and 1 egg cell).


The synergids have cellular thickenings at the micropylar tip called Filliform apparatus, and its main function is to guide the pollen tubes into the synergids.


3 cells are the chalazal end and are called Antipodals. Thus, a typical angiosperm embryo sac at maturity may possess 7-cells but 8-nuclei.


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