Practice question

Bryophytes sensu lato traditionally encompass three distinct phyla sharing poikilohydric habit, mat growth form and gametophyte-dominated lifecycle with small sporophyte: Marchantiophyta liverworts with unicellular rhizoids and oil bodies, Anthocerotophyta hornworts with single chloroplast and intercalary meristem, and Bryophyta mosses sensu stricto with multicellular rhizoids. Term collective bryophyte refers to this ecologically cohesive assemblage of nonvascular plants despite paraphyly. Tracheophytes are vascular plants, spermatophytes are seed subset of tracheophytes, thallophytes is obsolete polyphyletic term including algae, fungi, lichens now abandoned. This structural framework illustrates phylogenetic relationships and adaptive significance highlighted in competitive examinations focusing on comparative plant morphology and systematics.