Skip to content
Login Register

#nonvascular plants

2 public questions tagged with this topic.

Plant Classification

Nonvascular plants are collectively known as

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 obso

Ref: Goffinet & Shaw Bryophyte Biology Cambridge; Crum Mosses; Campbell Ch 29

View Details
Plant Classification

Which group is classified as nonvascular plants?

Tracheophytes including pteridophytes, gymnosperms and angiosperms all contain lignified xylem tracheary elements with bordered pits facilitating efficient long-distance water transport under negative pressure and structural support enabling tall upright growth independent of turgor. Nonvascular plants lack true lignified xylem and phloem, instead possess hydroids lacking lignin and leptoids for conduction plus external capillary action, limiting size to few centimeters. Bryophytes constitute sole recognized extant group occupying nonvascular grade. Classifying bryophytes as nonvascular aligns

Ref: Vanderpoorten & Goffinet Bryophyte Biology 2nd ed.; Campbell Ch 29: Nonvascular

View Details