I read that if you plant female trees,they attract pollen..How are males and females different?

It's actually the flowers that show up the male or female-ness of the tree/plant - male flowers have a stamen, and female flowers have pistils - the stamen is the one central piece of the flower, the pistils are the long pieces inside the petals :) See here for some good drawings in explanation -

I read that if you plant female trees,they attract pollen..How are males and females different?
Yes male and female trees are different. During the pollen season they go to the female trees to germinate {this can smell really bad depending on what kind of tree you have}.
Reply:male trees tend to hang around pubs in groups of 2 or more, whistling to all the female trees in a drunken stupour!
Reply:The male trees are usually messier and leave wet spots.