Phylogeny of plant reproductive organs

In this topic

• Algae: gametes fuse in the water
• Mosses and spore plants: gametangia, but water is still needed
• Gymnosperms: the pollen tube and the seed
• Angiosperms: the flower, double fertilisation and the fruit

Key terms

• Isogamy
• Oogamy
• Antheridium
• Archegonium
• Gametophyte
• Sporophyte
• Heterospory
• Pollen grain
• Pollen tube
• Ovule
• Double fertilisation
• Endosperm

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