1. Megasporangiums in the ovules undergo meiosis to become 4 haploid megaspores where only one survives.
2. The surviving megaspore develops into a female gametophyte. The female gametophyte has a archegonium which produces egg cells
3. Microsporangia in the pollen cones undergo meiosis and become haploid microspores. These microspores develop into pollen grains.
4. The pollen is carried to the seed cone by wind or animal (Pollination) the tube cells form pollen tubes through micropyle to reach the egg where the generative cell produces sperm which travel through the pollen tube to fertilize the egg
5. The diploid zygote develops into an embryo while the remaining gametophyte tissue provides food
6. Mature seed cone opens to release the seeds into the wind
7. The seed remains dormant until the ideal conditions are in place, the it develops into a young sporophyte tree
2. The surviving megaspore develops into a female gametophyte. The female gametophyte has a archegonium which produces egg cells
3. Microsporangia in the pollen cones undergo meiosis and become haploid microspores. These microspores develop into pollen grains.
4. The pollen is carried to the seed cone by wind or animal (Pollination) the tube cells form pollen tubes through micropyle to reach the egg where the generative cell produces sperm which travel through the pollen tube to fertilize the egg
5. The diploid zygote develops into an embryo while the remaining gametophyte tissue provides food
6. Mature seed cone opens to release the seeds into the wind
7. The seed remains dormant until the ideal conditions are in place, the it develops into a young sporophyte tree