Through which cell of the embryo sac, does the pollen tube enter the embryo sac?

Step-by-step solution

Pollen tube grows through the style and reaches the micropylar end. At the micropylar end, there are two synergids around the egg. The synergids have filiform apparatus that guides the pollen tube towards the egg. Thus the pollen tube enters embryo sac through one of the synergids. Related Theory The fully developed embryo sac at consists of three antipodal cells, two synergids, one egg cell and one secondary nucleus. The pollen tube pierces through the nucellus and penetrates the wall of the embryo sac. The tip of