gets implanted into uterus 3 days after ovulation

gets nutrition from uterine endometiral secretion only after implanation

gets implanted in endometrium by the trophoblast cells

forms placenta even before implantation

Liver

Pancreas

Salivary glands

Male accessory glands

Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation

The sperm lysins in the acrosome dissolve th egg envelope facilitating fertilisation

Acrosome serves as a sensory structure leading the sperm towards the ovum

Acrosome serves no particular function

Shortly after ovulation before the ovum makes entry into the Fallopian tube

Until after the ovum has been penetrated by a sperm

Until the nucleus of the sperm has fused with that of the ovum

in the Grafian follicle following the first maturation division