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Ginkgos are peculiar plants, with ovules and spermatozoids. I don't know if the term "seed" applies well. You need an (fertilized) egg to grow the plant.

https://kwanten.home.xs4all.nl/ovule.htm




Iā€™m no botanist, but I believe cycads have spermatozoids too. All seed plants (including angiosperms) have ovules.




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