The pteridophyte life cycle proceeds as follows:
B. Meiosis within spore mother cells generates spores.
A. Spores germinate, initiating the prothallus stage.
D. The prothallus matures to develop archegonia and antheridia, the reproductive structures.
E. Antherozoids are transported to the archegonia via water, facilitating fertilization.
C. Fertilization takes place, leading to the formation of a zygote.
The correct sequence is B, A, D, E, C.