Peristome mouth
WebMay 21, 2024 · 1. A ring of toothlike structures around the opening of a moss capsule. The teeth tend to bend and twist in dry weather,... 2. The area around the mouth in many … WebAug 22, 2015 · They have hard rounded shells covered with sharp movable spines. Urchins are part of the phylum Echinoderm and their name comes from Ancient Greek (echinos …
Peristome mouth
Did you know?
Webperistome / ( ˈpɛrɪˌstəʊm) / noun a fringe of pointed teeth surrounding the opening of a moss capsule any of various parts surrounding the mouth of invertebrates, such as … WebThis is the meaning of peristome: peristome (English)Origin & history From peri-Ancient Greek στόμα ("mouth") Noun peristome (pl. peristomes) One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses1911, Bryophyta, article in Encyclopædia Britannica Eleventh Edition, Its removal does not, however, leave the …
WebThese are called the peristome teeth by some writers (with the rim around the mouth being the peristome), while others simply use the word peristome to mean a toothed mouth. Peristome teeth may move in response to changes in humidity, either closing or opening the mouth to stop or allow spore release. WebSep 21, 2004 · The edge of the pitcher mouth (peristome) is a broad collar-shaped structure (Fig. 1A). In transverse section, it is T-shaped, with both horizontal arms of the T sloping downward (Fig. 1 F and H). ... Effect of Peristome in …
Webper•i•stome (ˈpɛr əˌstoʊm) n. 1. Bot. the circle of toothlike appendages surrounding the opening of a moss capsule. 2. Zool. any of various structures or sets of parts that surround or form the walls of a mouth or mouthlike opening. [1790–1800; < … WebThe peristome is circular and central on the lower surface and it is here that the mouth opens. In life much of it is covered in a thick skin with embedded plates (the imbricate embedded plates are still in position in the specimen illustrated). ... This is a structure formed from the plates immediately surrounding the peristome, and forms the ...
Webperistome 1. (Botany) a fringe of pointed teeth surrounding the opening of a moss capsule 2. (Zoology) any of various parts surrounding the mouth of invertebrates, such as …
WebNepenthes bicalcarata (/ n ɪ ˈ p ɛ n θ iː z b aɪ ˌ k æ l k ə ˈ r ɑː t ə,-b ɪ ˌ k æ l k ə ˈ r eɪ t ə /; from Latin for "two-spurred"), also known as the fanged pitcher-plant, is a tropical pitcher plant endemic to northwestern Borneo, … astaranxWebThese are called the peristome teeth by some writers (with the rim around the mouth being the peristome), while others simply use the word peristome to mean a toothed mouth. … astara trainingIn mosses [ edit] The first is termed haplolepidous and consists of a single circle of 16 peristome teeth. The second type is the diplolepidous peristome found in subclass Bryidae. In this type, there are two rings of peristome... 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 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. It often (for example in Cephalotus and Nepenthes) possesses sharp, overhanging 'teeth' which aid in prey retention. It is often … 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 … See more 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 … 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 • Dictionary definition See more astara youtubeWebnoun In zoology, mouth-parts in general; the structures or set of parts which surround the cavity of the mouth or oral opening and constitute its walls, framework, or skeleton: used chiefly of lower animals, as echinoderms, which have circular or radiate mouth-parts. from the GNU version of the Collaborative International Dictionary of English. astaraki amharic film number 2WebOedipodiaceae No peristome teeth, capsule mouth smooth . Tetraphidaceae Four peristome teeth, in one circular line . Polytrichaceae 16-64 peristome teeth, in one circular line . Buxbaumiaceae One or more rows of teeth, … astara tradingWebInteriorly when the lip has teeth it is dentateas in Nerita. When the teeth are rib-like it is described as plicateor lamellate. When it has numerous large plications, nodules or teeth … astara to bakuWebmorphology including mouth, tube feet, spines and gills. Peristome and mouth Peristome consisted of a peripheral layer in red color (Fig. 2A) that was free of spines and a few small pedicellariae located on its surface (Fig. 2A). These pedicellariae were shown as small or medium size rods with a thicker head resembling a closed fork (Fig. 2A). astaraki 2