Assertion: angiosperm's pollen | /r/HasProperty | innovative structures
Facets:
Source sentences:
text: Pollen and seed were innovative structures that allowed seed plants to break their dependence on water for reproduction and development of the embryo, and to conquer dry land.
text: Pollen and seed were innovative structures that allowed seed plants to break their dependence on water for reproduction and development of the embryo, and to conquer dry land.