Male Plant
Ginkgophyta and Cycadophyta (another phylum of Gymnosperms) are the only two phyla of the Gymnosperms remaining with motile sperm. Because of the flagellated sperm cells, fertilization can only happen when water is present. Not a lot of water is needed; a drop or two is sufficient, but the sperm cells must have a medium to swim through in order to get to the ovule.