Seed plants are a relatively young group of plants diverging from a clade of vascular plants. Their defining character are their seeds, which are embryos packed in a protective coat, packaged with a nutrient supply. They are further subdivided into Angiosperms and Gymnosperms.
Seed plants (Angiosperms and Gymnosperms) all have non-motile sperm. When looking at ALL ancestral plants, this would be a:
A. Synapomorphic trait
B. Symplesiomorphic trait
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