| 11. | The gametophyte cell closest to the dispersal of the seeds.
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| 12. | Two or three archegonia containing an egg then develop inside the gametophyte.
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| 13. | Liverworts, mosses and hornworts spend most of their lives as gametophytes.
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| 14. | The male gametophyte consists of a few cells within a pollen grain.
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| 15. | These spores represent the gametophyte phase of the life cycle.
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| 16. | The endosperm is haploid, derived from the female gametophyte.
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| 17. | The megaspore then undergoes megagametogenesis to give rise to the female gametophyte.
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| 18. | The vittarioid ferns are primarily photosynthetic gametophytes that reproduce asexually.
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| 19. | Juvenile giant kelp grow directly upon their parent female gametophyte.
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| 20. | The gametophytes are brown to white, cylindric, and repeatedly branched.
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