By continuing, you agree to our In the clam worms, however, the cirrus is the tentacular process or growth on each of the feet (parpodia), either the dorsal cirrus or the ventral cirrus, and has nothing to do with reproduction.[1]:p.
Free learning resources for students covering all major areas of biology. All Rights Reserved. Published by Houghton Mifflin Harcourt Publishing Company. Word origin: Latin, a curl, tuft, plant filament like a tuft of hair. This tutorial deals with the properties of soi.. Cassini Detects Vast Polar Ethane Cloud On Titan. a flexible, threadlike tentacle or appendage, as the feelers of certain organisms a cone-shaped cluster of fused cilia, occurring in many species of infusorians pl. (meteorology) A type of cloud characterized by thin, wisplike strands, often accompanied by tufts, thus, commonly referred to as ‘’mare’s tail’’. Among the tube blennies, a cirrus is a long growth extending from above the eye (a supraorbital cirrus) or extending below the neck-region (a nuchal cirrus). cir′rus Meteorol. dog, horse) that is coarse and longer than the normal coat yet less coarse than tactile hairs. (3) A protuberance in the upper lip where the nasolabial groove terminates in a salamander head. In flatworms, the cirrus is an eversible copulatory apparatus. All rights reserved. Terms of Use It is not intended to provide medical, legal, or any other professional advice. [1] The same structure exists in the various Taenia species of tapeworm. Please set a username for yourself. [2] Among the ribbonworms, the caudal cirrus is a small thread-like growth at the posterior end of the worm. © 2001-2020 BiologyOnline. 2. A high-altitude cloud composed of feathery white patches or bands of ice crystals. English Wiktionary.
This tutorial is a review of plant m.. Any information here should not be considered absolutely correct, complete, and up-to-date. 431, Among the bristleworms, a cirrus is a tentacular growth near the head or notopodium containing sense organs and may be either dorsal, ventral, or lamellar. Views expressed here do not necessarily reflect those of Biology Online, its staff, or its partners. (zoology) (1) A bundle or tuft of cilia serving as foot or tentacle in certain ciliate protozoa. Cirrus caudae in the largest biology dictionary online. [3] Among feather stars or barnacles, a cirrus is a long slender gripping or feeding appendage. A structure formed from a cluster or tuft of fused cilia, constituting one of the sensory or locomotor organs of certain ciliate protozoa. The American Heritage Dictionary of Medicine © 2018 by Houghton Mifflin Harcourt Publishing Company. Privacy Policy. In biology, a cirrus/ˈsɪrəs/SIRR-əs, plural cirri, /ˈsɪraɪ/SIRR-eye, (from the Latin cirrusmeaning a curl-like tuft or fringe) is a long, thin structure in an animal similar to a tentaclebut generally lacking the tentacle's strength, flexibility, thickness, and sensitivity. [6], Long, thin structures in both vertebrate and invertebrate animals, This article is about a structure in animals. Related forms: cirrous (adjective) Related terms: Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy.
THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. A slender flexible appendage, such as a tuft of fused cilia of certain protozoans or one of the feathery appendages of a barnacle. This tutorial is a continuation of the first lesson on chromosomal mutation. [5] In a nautilus, each of the animal's tentacles is composed of a thin flexible cirrus and the corresponding hardened and protective cirrus sheath into which the cirri may be withdrawn.
Withdrawals can be made from any ATM machine, anywhere in the world, that bears the Interac, Sometimes they float above the surface, sometimes they are connected with it by stems or branches, and they show delicate striated detail like, a flexible, threadlike tentacle or appendage, as the feelers of certain organisms, a cone-shaped cluster of fused cilia, occurring in many species of infusorians. noun, plural: cirri (botany) A tendril or clasper or similar part. A high-altitude cloud composed of narrow bands or patches of thin, generally white, fleecy parts. The content on this website is for information only. Cirrus is a type of thin white cloud that forms at high altitudes. They ar.. Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. Cirrus clouds generally form between 6,100 and 12,200 m (000 and 40,000 ft).
Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Here, find out the chromosomal aberrations .. Nutrients in the soil are essential to the proper growth of a land plant. People will see it as Author Name with your public flash cards. In biology, a cirrus /ˈsɪrəs/ SIRR-əs, plural cirri, /ˈsɪraɪ/ SIRR-eye, (from the Latin cirrus meaning a curl-like tuft or fringe) is a long, thin structure in an animal similar to a tentacle but generally lacking the tentacle's strength, flexibility, thickness, and sensitivity. the type of white cloud that resembles a wispy filament, found at high altitudes and consisting of ice crystals and Yes, I'd like to receive Word of the Day emails from YourDictionary.com. [4], In sea lilies, the cirri are the thin strands that line the animal's stalk. Available under CC-BY-SA license. Definition noun, plural: cirri (botany) A tendril or clasper or similar part. (2) An eversible copulatory organ of male flatworms and other invertebrates. (4) The hair of certain animals (e.g. Use this debit card anywhere you see an Interac, The Orchard Card is accepted at all ATMs in the, Cardholders can get cash advances at any ATM on the. The s.. Plants are characterized by having alternation of generations in their life cycles. For the plant structure, see, https://en.wikipedia.org/w/index.php?title=Cirrus_(biology)&oldid=963153285, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 June 2020, at 05:27. All rights reserved. A high-altitude cloud composed of narrow bands or patches of thin, generally white, fleecy parts. Before using our website, please read our Privacy Policy. They are.. With regard to the population size of a species and what factors may affect them, two factors have been defined. 1. Supplement In salamanders the cirri are more prominent among males, and are believed to be involved in courtship. All rights reserved. Webster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. If it is not eversible, then it is called a penis. In the sheep liver fluke, for example, the cirrus is the worm's muscular penis and when not in use is retained within a cirrus sac or pouch near the animal's head.