Is there any difference between male and female seed

There are couple different type of cannabis seeds and you can't tell it with your eye, You just need to know or try what it is unless you buy from trusted source. Basics are feminized and regular seeds. Feminized will guarantee 99% female while regular is roughly 50/50 male female. Then there is photoperiod and autoflower and these can be either feminized and regular

Not that you can tell with your eye.

You can plant any seed you like but feminized seeds are better because you will guarantee a female.