Only one.
The male organ of copulation is the penis.
copulation
On average, a man releases about 200-400 million sperm cells during ejaculation.
The sperm duct in an earthworm is responsible for transporting sperm from the seminal vesicles to the genital pores of another earthworm during copulation. This allows for the transfer of sperm from one worm to another for reproduction to occur.
They Procreate; or Reproduce is another Answer. By the by, there are many examples [primarily in The Oceans] of the uniting of Ova and Sperm without copulation.
They Procreate; or Reproduce is another Answer. By the by, there are many examples [primarily in The Oceans] of the uniting of Ova and Sperm without copulation.
Typically, only one sperm is needed to successfully fertilize an egg.
When mutual sperm exchange takes place. For example in gastropods.
Sparrows exhibit internal fertilization, where the sperm fertilizes the egg inside the female's body. The male bird transfers sperm to the female through copulation.
according to my research earthworms use external fertilization because they receive and store sperm from the other worms in copulation.
Sperm is needed to reproduce.
The male organ of copulation in humans is the penis.