(A) Statement is absolutely correct that “all pteridophytes exhibit haplo-diplontic pattern” - Yes, that's correct. In pteridophytes, which includes ferns and their allies, the haplo-diplontic life cycle is observed. There is an alternation of generations between a haploid (n) gametophyte stage and a diploid (2n) sporophyte stage. Both stages are free-living and independent.

(B) Seed-bearing plants are gymnosperms and angiosperms and both of them follow diplontic life cycle pattern. In these groups, the sporophyte generation is dominant, and the gametophyte generation is reduced and dependent on the sporophyte. The life cycle is thus said to be diplontic.

(C) Most algal genera are haplontic - This is generally true. The majority of algae, especially the green algae (Chlorophyta) and red algae (Rhodophyta), exhibit a haplontic life cycle where the dominant, photosynthetic phase is the haploid gametophyte.

(D) Most bryophytes have haplo-diplontic life cycle pattern - Bryophytes, including mosses, liverworts, and hornworts, do have a haplo-diplontic life cycle. In this cycle, there is an alternation of generations between a haploid (n) gametophyte stage and a diploid (2n) sporophyte stage. However, in bryophytes, the gametophyte stage is dominant and long-lived while the sporophyte is dependent on the gametophyte and short-lived.