Question
Briefly, explain the pattern of lifecycle followed by
a. All bryophytes
b. All pteridophytes
Solution
The bryophytes and pteridophytes both follow a Haplo-diplontic lifecycle.
Bryophytes - The haploid generation represents a dominant, independent, photosynthetic, thalloid or erect phase. The haploid phase alternates with the shortlived multicellular sporophyte totally or partially dependent on the gametophyte for its anchorage and nutrition.
Pteridophyte - The diploid sporophyte is represented by a dominant, independent, photosynthetic, vascular plant body. It alternates with multicellular,
saprophytic/autotrophic, independent but short-lived haploid gametophyte.
