WebMay 4, 2024 · The peristome is a series of cellular flaps (peristome teeth) that line the edge of the capsule opening and aids in spore dispersal via hygroscopic movements. Figure 6.2.3. 8: Moss sporophyte structures. In the first photo, the operculum of a Polytrichum sp. is visible. It is red and has a long, conical beak. WebWhat is the function of paraphyses? Protect male antheridia in moss. What is the function of protonemata? Form stem & leaf like structures and rhizoids of mature gametophyte. What is the function of the peristome teeth? Control release of spores. What is the function of elaters? Depending on weather, can protect or release spores.
Dispersal - bryophyte
In mosses, the peristome is a specialized structure in the sporangium that allows for gradual spore discharge, instead of releasing them all at once. Most mosses produce a capsule with a lid (the operculum) which falls off when the spores inside are mature and thus ready to be dispersed. The opening thus revealed is … See more Peristome (from the Greek peri, meaning 'around' or 'about', and stoma, 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes. See more The basidiocarps of some gasteroid fungi - such as puffballs and earthstars - release spores through an apical opening that is termed a peristome and is variously delimited, its … See more The peristome is any of the structures or sets of parts that surround the mouth or invertebrates such as echinoderms or earthworms. See more In pitcher plants, the peristome is a reflexed ring (or partial ring) of tissue that surrounds the entrance to the digestive tube in these plants. … See more The peristome is the margin of the aperture of a gastropod shell. It is the edge of the lip of the shell. This part is sometimes reflected (turned back) or thickened once the snail reaches adult size, and these qualities of the peristome can be diagnostic … See more • Dictionary definition See more WebNov 1, 2009 · The Peristome: Surface Structure, Wettability and Trapping Function. Pitchers of most Nepenthes species have a well-developed peristome, the surface of which is characterized by a highly regular microstructure composed of first and second order radial ridges ().The larger first order ridges vary between species in height, shape and spacing. tea kettle heating element kit
The Echinoid Directory - Natural History Museum
WebOther articles where peristome is discussed: bryophyte: Annotated classification: …opening by apical cap (operculum); peristome teeth usually surrounding the sporangium mouth and influencing spore release; columella usually present, encircled or overarched by a spore-bearing layer; calyptra capping apex of elongating seta and influencing survival and … WebScience Biology Starfish Oral Side Describe the structures of the oral side of starfish. Such as peristome, ambulacral grooves, and tube feet Starfish Oral Side Describe the … WebMar 31, 2024 · Starfish or sea stars belong to the phylum Echinodermata. Morphologically they have an oral surface and an aboral surface. The oral surface, facing towards the … tea kettle made in ireland