1. Gymnosperm Reproduction

2. “Pine Tree” (sporophyte) produce male & female cones
In the ovule, a megaspore parent cell produces megaspores.
In the pollen sacs, microspore parent cells produce pollen grains (microspores)
One megaspore becomes the female gametophyte.
Mature pollen grains are the male gametophyte.

3. Sperm from male gametophyte (pollen) fertilizes the egg in the female gametophyte via a pollen tube.
Ovule develops into a seed which contains the embryo.
Seed falls off the female cone & develops into a tree.