He would need to ejaculate (usually either through a wet dream, self stimulation or masturbation, or sexual intercourse.
Yes a thirteen year old can produce sperm, most thirteen year old boys and even younger than that produce sperm.
The body only produces so much in a day. Masturbating several times a day or in a shorter period of time could cause him to run out for a while. Next day there will be more.
If it was, I'd have found out... So, no.
Your body usually starts producing sperm when you are about 13 years and continues 24/7 into your eighties and beyond.
13 year old boys can produce sperm.
plants do not produce sperm, they produce pollen
Sperm generally starts being produced at around the age of 13 to 15. Remember this can vary depending on how fast the individual is developing.
Masturbate to produce sperm.
There is a lot of variation in the ages at which boys can first produce sperm but on average around 12 to 14 is pretty common. Of course some boys can produce sperm earlier than this and some won't produce sperm until their late teens.
Boy produce sperm "usually" between the ages of 11 and 13. There are exceptions but this is the average age.
it could be different for every individual.normally it ranges from the age 13 and onwards.
Women do not produce sperm ! Women produce eggs - which are developed in their ovaries !
females do not produce sperm
You can produce sperm in your semen once puberty has begun. Before puberty begins you will not be able to produce semen. The testes will produce the sperm when the secondary sexual characteristics are ready.
All animals produce about the same amount of sperm.