Thousands of hundreds of sperm race towards the egg for the chance of fertilization. Normally, only one gets there first and has the winning prize of fertilization.
Egg cells are the biggest: you could only fit one on the head of a pin. But I'm not sure if a sperm cell is bigger than a red blood cell or vice versa.
Eggs do not move, but sperm do. The sperm's tail allows it to move more quickly to the egg.
Yes, it is possible for 2 sperm to reach the egg, however only one will fertilize the egg. It isn't uncommon for more than 2 to reach the egg, depending how are along the egg is down the falopian tube. And how much sperm was ejaculated.
half
Fertilization occurs when a sperm and egg unite.
sperm needs to mature enough to reach the egg to form zygote
sperm and egg. the sperm FERTILIZES the egg.
The sperm fertilised the egg.
because god make it so
The size of egg is larger than sperm because the the sperm enters inside the egg and egg has to accommodate the sperm. And egg contains fats and nutrients in order to feed zygote in case of pregnancy.
The change in the egg's covering is due to a process called the zona reaction, which is triggered by the entry of the sperm into the egg. This reaction helps prevent other sperm from entering the egg, ensuring that only one sperm fertilizes the egg.
A sperm or egg alone can not develop into a new individual. Only an egg fertilized by a sperm does.