Why do flowers have more than one stamn

They have more then one stem because the seed brakes into roots and create more stems

Do you mean stamens? If so, actually the answer is that sperm is an abundant manufacture for a flower. That's why there is sooo much pollen everywhere in the spring! And all this pollen is to fertilize a limited amount of eggs.

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask