You are presented with the quiz "What occurs when a male gamete swims to an egg?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "fertilization occurs when sperm swim to an egg inside an archegonium" and "gametes in males are called sperm, and in women commonly referred to as eggs". 

So, what's the best answer to the question?


 

     fertilization      