Ovule primordium

An anlage is a primordium, the initial clustering of embryonic cells from which a body part develops.

Yes

The basic definition is: Spermatogonia are are the first cells of spermatogenesis. They originate in the 4th week of foetal development in the endodermal walls of the yolk sac and migrate to the primordium of the testis, where they differentiate into spermatogonia. Spermatogonia remain dormant until puberty.

In fact the development of a seed starts from an ovule, the ovule primordium develops on the placenta of the ovary. It gets enclosed by the outer and inner integuments, which form the seed coat on maturity. Thus seed coat develops first and after fertilization the embryo comes in to being.