It's obvious what he means by male and female sperm, you Idiots. If you were as smart as you think you are then you would know what the question meant.
Men produce two types of sperm, those containing the X chromosome, (female sperm) and those containing the Y chromosome (male sperm). As the Y chromosome is smaller than the X chromosome the male sperm is lighter and faster than the female sperm and therefore gets a head start towards the egg. Female sperm being heavier have more staying power and can keep going for longer
Men produce two types of sperm, those containing the X chromosome, (female sperm) and those containing the Y chromosome (male sperm). As the Y chromosome is smaller than the X chromosome the male sperm is lighter and faster than the female sperm and therefore gets a head start towards the egg. Female sperm being heavier have more staying power and can keep going for longer