Polychaetes, like the earthworms are segmented (annelid) worms. Earthworms, leeches and some freshwater worms belong to a group called the oligochaetes, since they have only a few spines (chaetae) per segment. Copyright © 2020 LoveToKnow. They have unique, multicolored spiral structures that serve as tentacle-like appendages that assist with respiration as well as capture food and move it to the worm’s mouth. Of these 6, the two first to be considered are very plainly separable and represent the extremes of Polychaete organization. Polychaetes are multi-segmented worms living in all environments in the world's oceans, present from abyssal depths to shallow estuaries and rocky shores, and even free swimming in open water. Polychaetes are extremely variable in both form and lifestyle, and include a few taxa that swim among the plankton or above the abyssal plain. This form of nephridia leads to the shorter but essentially similar organs in the Polychaete Sternaspis, and to those of the Echiuroidea (q.v.) The majority of these 50 species are red algae, polychaete worms, crustaceans and mollusks. Underwater polychaetes have eversibl… This example is from Wikipedia and may be reused under a CC BY-SA license. “Polychaete.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polychaete. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polychaete.' What made you want to look up polychaete? All Rights Reserved. Build a city of skyscrapers—one synonym at a time. A further fact must be considered in deciding this question, which is the discovery of ramifying coelomic tubes, approaching close to, but not entering, the epidermis in the Polychaete Arenicola. Examples of polychaete in a Sentence. 'Nip it in the butt' or 'Nip it in the bud'? Most burrow or build tubes in the sediment, and some live as commensals.
Or something like that. The soft sediment infauna may include amphipods, polychaete worms, bivalves and echinoderms. The mobile forms (Errantia) tend to have well-developed sense organs and jaws, while the stationary forms (Sedentaria) lack them, but may have specialized gills or tentacles used for respiration and deposit or filter feeding, e.g., fanworms. 0. A few are parasitic.
What does 'poke' refer to in the expression 'pig in a poke'. Polychaetes, which include rag worms, lugworms, bloodworms, sea mice, and others, are marine worms notable for well-defined segmentation of the body.
Polychaete wormsare in the kingdom: animalia, phylum: annelida,and class: polychaeta.The word polychaeteitself means “many brushes”. polychaete worms, in particular their giant cells and nerve fibers. Along with these brushes on each of metameric there is also are a pair parapodia (appendages) protruding from each side (Polychaeta Facts & Informat… look at a few selected examples. This refers to one of the major distingushing characteristics of this marine worm which is polychaetealways have elongated, metameric (segmented) bodies with bristles or brushes on some or all of the metameric. They do not represent the opinions of YourDictionary.com. This form of nephridia leads to the shorter but essentially similar organs in the Polychaete Sternaspis, and to those of the Echiuroidea (q.v.) Cleavage leads to the formation of an epibolic gastrula and ciliated embryo which hatches as a free-swimming larva remarkably like that of a Polychaete worm (D). Britannica.com: Encyclopedia article about polychaete. polychaete. Delivered to your inbox! From. noun.
The word usage examples above have been gathered from various sources to reflect current and historial usage. Test Your Knowledge - and learn some interesting things along the way. Christmas tree worms are one type of polychaete found in tropical oceans throughout the world. 'All Intensive Purposes' or 'All Intents and Purposes'? and of the Gephyrea. For at least 30 million years, bone-eating worms have been making their homes in the bodies of decomposing whales on the seabottom, but the rotting cetacean carcasses are not just food sources for the, Post the Definition of polychaete to Facebook, Share the Definition of polychaete on Twitter, ‘Fascism’: The Word’s Meaning and History.
Polychaetes have more chaetae per segment and and of the Gephyrea. 0. Most are carnivorous and feed on cnidarians, sponges, polychaetes and bryozoans. Learn a new word every day. Recent Examples on the Web For at least 30 million years, bone-eating worms have been making their homes in the bodies of decomposing whales on the seabottom, but the rotting cetacean carcasses are not just food sources for the polychaetes.
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