Assertion: zygote's division | /r/AtLocation | angiosperm
Facets:
value: often
type: TEMPORAL
Source sentences:
text: In angiosperms, the first division of the zygote is often, although not always, asymmetric and sets up an apical cell toward the chalazal end and a basal cell toward the micropylar end of the ovule (Fig. 1-3).