In misogamy the pollen tube enters into the embryo sac through

In misogamy, the pollen tube enters the embryo sac through the Micropyle.
Misogamy is an aversion to or hatred of marriage. The word dates from the mid-17^th century and combines the Greek misos (hatred) with gamos (marriage). Merriam-Webster date the first use of the word to around 1656.
The micropyle is a small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed.