Meanings of germinate directly in English

It is known that zoogametes, which usually conjugate, may, when conjugation fails, germinate directly (Sphaerella.)

In these cases, however, the potential gametes may, failing conjugation, germinate directly, like the zoospores derived from unilocular sporangia.

Zeospores; 2, 4, or multiciliated active automobile cells-gonidia-dischargedfrom the mother cells or plants without impregnation, and germinating directly.

Among Phaeophyceae it is well known that the oospore of Fucaceae germinates directly into the sexual plant, and there is thus only one generation.