Step-by-step explanation:
Presence of male and female gametangia (antheridia and archegonia) with protective layer (sterile jacket layer)
2. Retention of both the zygote and the developing multicellular embryo, or young sprorphyte within the archgonium on the female gametophyte
3. Presence of a multicellular diploid sporophyte with spores
4. Multicellular sporangia consisting of a sterile jacket layer and internal spore-producing (sporogenous) tissue
5. Meiospore with walls containing sporopollenin
6. Tissues produced by an apical meristem