Fertilization or Impregnation. Getting preggers is commonly used today.
the egg will move into a position then the sperm cell will move closer]
Fertilization.
Ovum has a layer of zona pellucida around itself. When a sperm enters the ovum, the cortical granules present in the ovum, causes the thickening of the zona pellucida. This prevents the entry of other sperms in the ovum and only one sperm is able to fertilize the egg.
Sperm production is the creation of sperm in the testies of the bull. Ovum production is the creation of eggs in the ovaries of the cow.
assuming you mean a sperm and not a cingular cell of a sperm, it is about 1/18th the size of an ovum.
When the ovum and sperm come together they become a fertlized egg also known as a zygote.
Ovum is mainly 1n and zygote formed by fusion of ovum and sperm is 2n ,,,
Chromosomes.
It has a long tail that helps it swim easily to reach the ovum, It has a pointed tip in the head of the sperm which allows it to effectively enter the ovum.
The luckiest of all sperms makes it alive and fuses with the ovum.
Sperm+ ovum= Zygote
An zygote.