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30. Plant Diversity II: The Evolution of Seed Plants
Layers of sporophyte tissue that envelop and protect the megasporangium
Transitional species of gymnosperms
Stalk of the stamen, connected to the anther
Stalk of the carpel, connected to the stigma
Part where the flower is attached to the stem
A single or group of carpel(s)
The thickened wall of fruit, stemming from the wall of the ovary