Search results
Results from the WOW.Com Content Network
An example of moss (Bryophyta) on the forest floor in Broken Bow, Oklahoma. Bryophytes (/ ˈ b r aɪ. ə ˌ f aɪ t s /) [2] are a group of land plants (embryophytes), sometimes treated as a taxonomic division, that contains three groups of non-vascular land plants: the liverworts, hornworts, and mosses (Bryophyta sensu lato). [3]
The Marchantiophyta (/ m ɑːr ˌ k æ n t i ˈ ɒ f ə t ə,-oʊ ˈ f aɪ t ə / ⓘ) are a division of non-vascular land plants commonly referred to as hepatics or liverworts.Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information.
Some liverworts, such as Marchantia, have a cuticle, and the sporophytes of mosses have both cuticles and stomata, which were important in the evolution of land plants. [ 3 ] All land plants have a life cycle with an alternation of generations between a diploid sporophyte and a haploid gametophyte , but in all non-vascular land plants, the ...
Chloroplasts (green discs) and accumulated starch granules in cells of Bryum capillare. Botanically, mosses are non-vascular plants in the land plant division Bryophyta. They are usually small (a few centimeters tall) herbaceous (non-woody) plants that absorb water and nutrients mainly through their leaves and harvest carbon dioxide and sunlight to create food by photosynthesis.
The divergence between hornworts and Setaphyta (mosses and liverworts) is estimated to have occurred 479–450 million years ago, [24] and the last common ancestor of present-day hornworts lived in middle Permian about 275 million years ago. [25]
Protonemata are characteristic of all mosses, are present in some liverworts under certain conditions [2] but are absent from hornworts. [ citation needed ] The protonemata are composed of two cell types: chloronemata , which form upon germination of the spore, and caulonemata , which later differentiate from chloronemata under the influence of ...
Bryology (from Greek bryon, a moss, a liverwort) is the branch of botany concerned with the scientific study of bryophytes (mosses, liverworts, and hornworts). Bryologists are people who have an active interest in observing, recording, classifying or researching bryophytes. [1]
Liverworts (Hepaticae) are non-vascular plants with a bryophyte life cycle in which the gametophyte is the dominant generation. The study of mosses and liverworts is called bryology . The main article for this category is Marchantiophyta .