Difference between sperm and ovum?

Sperm is of a male which has X n Y chromosome. N ovum is of female which has only X chromosome. N during sexual intercourse sperm n ovum joins together to form zygote. N if the mixxing will be X-X then female birth will take place n if X-Y then male birth will tale place.
The size of sperm (60cm) is very small whereas the size of ovum is longer (100cm).
Small amount of cytoplam is present in sperm whereas large amount of cytoplasm is present in ovum.
Sperm is parted into neck, tail, middle piece and head. But ovum is parted into sherical or oval.

60cm and 100cm sperm and egg size. I wonder how the testis and ovaries would accomodate them.

Please do the needful corrections .