Gymnosperms
Gymnosperms are referred to as the "naked seeded" plants because of the way they just drop their seeds. The pollination is done with the trees having both pairs of gonads until they reach the point in which they are ready to be dropped and are then released downward for animals and other things to eat and then deposit away from the tree or most commonly an offspring tree will appear just outside of the "competition" zone and the process will repeat itself.