Assertion: angiosperm's structure | /r/HasProperty | the carpel
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Other important evolutionary innovations in angiosperms that also may have contributed to their success include a more efficient source of nutrition for the developing embryo through the production of triploid endosperm (in other seed plants the haploid female gametophyte tissue nourishes the young embryo) and the protection of ovules and developing seeds inside a novel, closed structure, the carpel.
text: "naked" and σπέρμα sperma, "seed"), as the ovules and subsequent seeds are not enclosed in a protective structure (carpels or fruit), but are borne naked, typically on cone scales.
text: These three structures are often termed a pistil or carpel.
text: Flowers are modified shoots bearing a series of leaflike modified appendages and containing ovules (immature seeds) surrounded and protected by the female reproductive structure, the carpel or pistil.