Lophophore feeding structure What is a lophophore? A. , Historically, the Ectoprocts were referred to as, Symbion pandora is the first documented species belonging to phylum and more. Comparison Most organisms placed in the superphylum Lophotrochozoa possess either a lophophore feeding apparatus or a trochophore larvae (thus the contracted name, "lopho-trocho-zoa"). feeding current. that allow for continuous feeding. Brachiopods feed on minute organisms or organic particles. They are more closely related to brachiopods (lamp shells) and phoronids (horseshoe worms) than they are to cnidarians. Jul 8, 2023 · Lophophore: Brachiopods possess a lophophore, a specialized feeding structure. The lophophore performs various functions, the most important of which is the collection and sorting of food particles. , Which protostome phylum is distinguished by having an unsegmented body with pseudocoelm? and more. It is composed of numerous tentacles covered in cilia. It is a synapomorphy defining lophotrochozoans, which also may have a lophophore feeding structure. The cilia generate water currents that bring in food particles from the surrounding water. Its intricate design and efficient function highlight the evolutionary adaptations that have made Ectoprocta a successful and ecologically important group of organisms. Organisms in this category are all covered with a hard exoskeleton or cuticle that molts D. lophophore feeding structure. The lophophore is a _____ shaped feeding structure that is shared by many Lophotrochozoans. What structure in turbellarians varies from simple and ciliated to a Some organisms have a lophophore feeding structure. Its ciliated tentacles form a funnel with the small end surrounding the mouth and the large end opening to the water. The lophophore is a feeding structure composed of a set of ciliated tentacles surrounding the mouth. 5 millimetres (1 ⁄ 64 in) long, they have a special feeding structure called a lophophore, a "crown" of tentacles used for filter feeding. A distinctive type of larva with a band of cilia D. The lophophore is a feeding structure that generally consists of ciliated tentacles. [2] All lophophores are found in aquatic organisms. 1 day ago · In conclusion, the lophophore is a remarkable feeding structure that allows Ectoprocta to thrive as filter feeders in aquatic environments. Some lophotrochozoan phyla are characterized by a larval stage called trochophore larvae, and other phyla are characterized by the presence of a feeding structure called a lophophore (thus, the shorter term, “lopho-trocho-zoa”). Pedicle: A stalk that anchors the animal to a surface. , Some species of rotifers consist solely of females. -They are all parasitic. Brachiopoda Phoronida Annelida Mollusca Bryozoa, Which of the following refers to an organism that has Lophophore (feeding structure with ciliated tentacles) and trochophore (larva with a ring of cilia). What are the general characteristics that define the body design of lophotrochozoans? What are the 3 phyla that we discuss in this group? Study with Quizlet and memorize flashcards containing terms like Lophotrochozoans get their name from the lophophore, a horseshoe [ ] structure. Trochophore Larva. The brachial axis may be attached to the brachial Aggregation of animals that possess a feeding structure known as lophophore. The lophophore is a ring-shaped or horseshoe-shaped organ that surrounds the mouth. Look (very carefully) inside the shell. The common origin of the tentacle apparatus in Lophophorata from the postoral ciliary band of the larva is shown. Study with Quizlet and memorize flashcards containing terms like Which of the following statements correctly describes a characteristic of the phylum Platyhelminthes? -They are radially symmetrical. 3A: Superphylum Lophotrochozoa is shared under a CC BY-SA 4. The lophophore is used for filter feeding and is typically horseshoe-shaped or spiral, encapsulating or surrounding the mouth of the organism. Study with Quizlet and memorize flashcards containing terms like Are there any homoplasies on your tree? Which traits are homoplasious? Make sure you have indicated any homoplasies on your tree using an asterisk (*), Even though both earthworms and nematodes are called "worms," they are classified in different phyla. Mar 9, 2023 · The feeding organ is a cluster of ciliated tentacles called a lophophore, which captures particles suspended in the water. Study with Quizlet and memorize flashcards containing terms like Select all of the following that describe a lophophore. C. suspension feeding The molluscan body plan is based on three major components: the foot, the visceral mass, and the _______. A lophophore is a complex, ciliated feeding structure characteristic of certain marine invertebrate groups, such as bryozoans, brachiopods, and phoronids. Although some members do not possess these structures, their classification is supported by RNA sequence comparisons. Trocophore larval stage. The outermost part of a zooid is a non-living layer called an ectocyst, composed of either chitin or a slick mucopolysaccharide. bilateral symmetry and three germ layer, true tissues Mollusca Snails, clams, squid, octopus: soft body protected by hard shell, but octopus and squid have lost theirs. tegument gastrodermis mesoglea parenchyma, Adhesive and releaser glands are used by _________ to attach to substrates. Eumetazoa (true tissues) Radiata (Radial symmetry) Bilateria (Bilateral symmetry) Lophotrochozoa (Lophophore feeding structure) Ecdysozoa (Molt) Deuterostomia (blastopore in early development becomes the anus of the digestive tract first, the mouth comes later). Note the general similarity in form of these fossil terebratulids Study with Quizlet and memorize flashcards containing terms like What are the general protostome lophotrochozoan characteristics with respect to symmetry, tissue layers, and embryonic development?, What phyla have a lophophore feeding structure?, What phyla have a trochophore larval stage? and more. This specialized structure is a crown of ciliated tentacles arranged in a U-shaped or circular pattern around the mouth. Apr 7, 2025 · The characteristic feeding structure of bryozoans (also known as Ectoprocta) is the lophophore. lophophore feeding structure, a horseshoe-shaped crown of ciliated tentacles around the mouth used in filter-feeding the coelom extends functions as a surface for gas exchange cilia serve to guide the organic detritus and plankton on which the animal feeds to the mouth suspension feeding • The lophophore is a specialized structure that rings the mouth and functions in suspension feeding. Lophophore present in all – Ring of ciliated tentacles around mouth – Anus and nephridiopores are outside the ring. Feeding structure which captures suspended food particles from surrounding water. lophophore feeding structure composed of a set of ciliated tentacles surrounding the mouth. 1981). Segmented worms (earthworms): lophophore feeding structure, trochophore larvae. one of two groups of Spiralia that exhibit a trochophore larvae stage or a lophophore feeding structure Phyla: Brachiopoda, Mollusca, Annelida, and Nemertea Parazoa animals without symmetry, tissues, or organs; cells have complex development for multicellularity Phylum Porifera - Lophophore feeding structure - Protostomes + Deuterostomes - Coelom formation varies - Blastopore fate varies - Ribosome Protostome - Like Ex: Phylum Phoronida, Bryozoa, Brachiopoda Phylum Annelida "Little Rings" The lophophore is a feeding structure composed of a set of ciliated tentacles surrounding the mouth. acanthocephalans turbellarians Apr 27, 2025 · Bryozoans and hydroids occupy distinct branches on the tree of life. Mollusca are included in this group of organisms E. So it would seem likely that all animals with a lophophore should be related to each other more closely than those without. This structure is composed of a pair of tentacle-bearing arms that have a circular, U-shaped, or highly coiled arrangement, depending on the species, and generates the feeding currents that these organisms use to capture prey. About us. Nov 14, 2023 · Bryozoans feed with a specialized structure called a lophophore, which looks like a "crown" of tentacles and has been more precisely characterized as essentially a tentacle-bearing ribbon or string in the shape of a horseshoe or closed ring surrounding the mouth (Smithsonian 2007; Luria et al. Kingea is from the Early Cretaceous, and Rensellaeria is one of the earliest terebratulids (Early Devonian). Mollusca (100,000 species) trochophore larva. Lophophorates are a group of marine invertebrates characterized by the presence of a specialized feeding structure called a lophophore. Most marine bryozoans live in tropical waters, but a few are found in oceanic trenches and polar waters. The single opening in species with a blind gut C. Their method of Nov 29, 2022 · A trochophore is a distinctive larval form found in several invertebrate species within the Lophotrochozoa superphylum, characterized by its free-swimming nature and two bands of cilia. Lophotrochozoa is named for two structural features, each common to certain phyla within the clade. What really sets this group apart from other phyla is the common possession of a ciliary feeding device called a lophophore (Gr. - In this clade, many animal groups, such as phylum Mollusca, have a trochophore larva, and some groups have a lophophore feeding structure. Bryozoans possess a unique feeding structure called a lophophore. A trochophore is a free-swimming larva characterized by two bands of cilia surrounding a top-like body. The lophophore is a highly derived, specialized feeding structure that is unlikely to have evolved more than once. A lophophore is a unique arrangement of ciliated tentacles borne on a ridge (a fold of the body wall), which surrounds the mouth but not the anus. a type of free-swimming Jan 20, 2025 · Statoblast: A small, tough structure that helps freshwater bryozoans survive in harsh conditions. DO NOT PRISE THE ARTICULATED SPECIMEN OPEN: IT IS VERY FRAGILE! A2: Fossil terebratulid brachiopods. The lophophore is a crown-like structure that surrounds the mouth and is used for suspension feeding. The trochophore is a particular type of larva that is free-swimming due to a band of cilia that girdles it. , Identify the phylum whose members have the following characteristics: Marine Iophophorate organisms with two calcified valves (dorsal and ventral) that resemble shells. Some lophotrochozoans have one of these structures; others have neither and are placed within the group due to molecular homology. Some lophotrochozoan phyla are characterized by a larval stage called trochophore larvae, and other phyla are characterized by the presence of a feeding structure called a lophophore. Extending a crown of tentacles above its shell, the bryozoan flicks its tentacles through the water to catch bits of food. Study with Quizlet and memorize flashcards containing terms like In deuterostomes, the blastopore gives rise to the ___. Animals that molt their exoskeletons, such as these (a) Madagascar hissing cockroaches, are in the clade Ecdysozoa. and more. What is a lophophore? a) a specialized filter-feeding structure b) the single opening in species with a blind gut c) a distinctive type of larva with a band of cilia d) a synapomorphy that defines lophotrochozoans Mar 15, 2024 · Lophotrochozoa encompasses a diverse clade of animals that are primarily identified by their developmental patterns, including the presence of a lophophore (a ciliated feeding structure) in some members and trochophore larvae in others. Figure \(\PageIndex{2}\): Animals that molt their exoskeletons, such as these (a) Madagascar hissing cockroaches, are in the clade Ecdysozoa. As mentioned earlier, bryozoans belong to the phylum Bryozoa (or Ectoprocta), a group known for its colonial nature and unique lophophore feeding structure. The tentacle structure of cheilostome - Lophophore =Feeding structure which is found in three phyla - Trochophore = A type of larva which is common to many of the phyla Describe lophophore? -Specialized structure that rings mouth of these animals and functions in suspension feeding U-shaped gut, protective covering, simple gonads, lophophore Lophophore Ciliated feeding structure, ring of hollow tentacles around mouth, extension of the metacoel, functions in feeding respiration, lateral cilia create water current, frontal cilia transport food to mouth. Tentacles are hollow and also used for respiration Gut is U shaped with the mouth opening inside the lophophore ring and the anus opening outside the ring Typically about 0. This group includes phoronids, ectoprocta and Brachiopoda. -They typically reproduce asexually. What phyla has the most variety of species. , Members of the phylum Platyhelminthes contain a loose mesodermally derived tissue called ______. The molluscan body plan is based on three major components: the foot, the visceral mass, and the _______. 0 license and was authored, remixed, and/or curated by Boundless . - The lophotrochozoan animals are protostomes that grow by gradual additions of mass to the body. -They are dorsoventrally flattened. The lophophore (/ ˈ l ɒ f ə ˌ f ɔːr, ˈ l oʊ f ə-/) [1] is a characteristic feeding organ possessed by four major groups of animals: the Brachiopoda, Bryozoa, Hyolitha, and Phoronida, which collectively constitute the protostome group Lophophorata. Figure 2. Lophotrochozoan phyla have a lophophore, a specialized structure for _____. clade of protostomes that exhibit a trochophore larvae stage or a lophophore feeding structure. Valves: Two protective shells on the top and bottom of the animal. Phylum Brachiopoda Terms Lophophore: A feeding structure with tiny tentacles that move water and food towards the mouth. Some organisms in this group can undergo spiral cleavage Lophophore feeding structure 2. Data on the development, structure, and functional morphology of the brachiopod lophophore are analyzed. Note the general similarity in form of these fossil terebratulids All brachiopods filter feed on planktonic organisms and possess a distinctive feeding structure called a lophophore. Cilliated tentacles on a ridge or fold of the body wall. Oct 12, 2023 · The defining features of this group include the presence of a lophophore, a specialized feeding structure with ciliated tentacles, and a trochophore larvae, which is a free-swimming larval stage with two bands of cilia. The frontal cilia on the tentacles, never strongly developed, have been observed by both Borg and Atkins occasionally to carry particles towards the mouth. Aug 1, 2007 · The morphology of the lophophore and the structure of all lophophoral organ systems are examined in respect to the standard criteria of homology. The lophophore of Zoobotryon verticillatum has eight tentacles each about 360 microns long (Fig. Study with Quizlet and memorize flashcards containing terms like The and the are the structures that describe the organisms within the lophotrochozoan protostomes, What structure is a feeding device that consists of a crown of cilia?, Select all of the phyla characterized by a lophophore. Study with Quizlet and memorize flashcards containing terms like What is a lophophore?, One trait that is shared by the Lophotrochozoa and Ecdysozoa is_____. A lophophore is an upstream collecting system for suspension feeding. Articulate brachiopods, which have a blind intestine, may depend partly on dissolved… …by means of a protrusible lophophore, a structure at the anterior end that bears a circle or paired spiral of as many as 1,500 ciliated tentacles. A synaptomorphy that defines lophotrochozoans lophophore feeding structure. Mar 1, 2010 · Phoronids, like other Lophophorata (Bryozoa and Brachiopoda) are filter feeders. They all have a tripartite bauplan, Simple U-Shaped gut, exoskeleton, lophophoral tentacles and Epistome. -They are diploblastic. The lophophore is a U-shaped or circular ring of ciliated tentacles used for filter feeding. found in mollusks, creates top. lophos, crest or tuft, + phorein, to bear). The brachiopod lophophore is based on the brachial axis consisting of the brachial fold running along the row of tentacles. 1). Nov 23, 2024 · lophophore: a feeding organ of brachiopods, bryozoans, and phoronids cephalization : an evolutionary trend in which the neural and sense organs become centralized at one end (the head) of an animal This page titled 28. a) clade of protostomes that exhibit a trochophore larvae stage or a lophophore feeding structure b) group of animals with true differentiated tissues c) clade of protostomes that exhibit exoskeletal molting (ecdysis) d) group containing all animals The lophophore is a _____ shaped feeding structure that is shared by many Lophotrochozoans - horseshoe Members of the phylum Platyhelminthes contain a loose mesodermally derived tissue called __________ The lophophore, the structure characteristic of lophophorates, plays important roles in which of the following processes? Feeding Respiration Which of the following characteristics are typical of bryozoans? Study with Quizlet and memorize flashcards containing terms like lophophore, trochophore, spiral cleavage and more. Explanation: What is a Trochophore? Some lophotrochozoan phyla are characterized by a larval stage called trochophore larvae, and other phyla are characterized by the presence of a feeding structure called a lophophore. A specialized filter-feeding structure B. Most organisms placed in the superphylum Lophotrochozoa possess either a lophophore feeding apparatus or a trochophore larvae (thus the contracted name, “lopho-trocho-zoa”). Why is this so? What would be a good phylogenetic term (mono, para The lophophore is a feeding structure composed of a set of ciliated tentacles surrounding the mouth. vsiobdldhrudztskoayhqxskxvdmhnqnvfaqgmtupqkulvezscbfaoscwouzzaqscs