Web13 nov. 2024 · Mollusks are members of the invertebrate phylum Mollusca and contain …
Mollusk Definition, Characteristics, Shell, Classification,
Web14 nov. 2024 · Viscera are the most common name for body organs. They appear as a visceral mass, ... Hemolymph is the name for the blood found in mollusks. Some mollusks have a secure circulatory system, which means blood flows through closed containers like squids. All organ systems of the mollusk body, ... Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks . Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The … Meer weergeven The words mollusc and mollusk are both derived from the French mollusque, which originated from the Latin molluscus, from mollis, soft. Molluscus was itself an adaptation of Aristotle's τὰ μαλάκια ta malákia (the … Meer weergeven Estimates of accepted described living species of molluscs vary from 50,000 to a maximum of 120,000 species. The total number of described species is difficult to estimate … Meer weergeven Feeding Most molluscs are herbivorous, grazing on algae or filter feeders. For those grazing, two feeding … Meer weergeven Fossil record Good evidence exists for the appearance of gastropods (e.g., Aldanella), cephalopods (e.g., Plectronoceras, Nectocaris) and bivalves Meer weergeven The most universal features of the body structure of molluscs are a mantle with a significant cavity used for breathing and excretion, and the organization of the nervous system. Many have a calcareous shell. Molluscs … Meer weergeven Because of the great range of anatomical diversity among molluscs, many textbooks start the subject of molluscan anatomy by describing what is called an archi-mollusc, hypothetical generalized mollusc, or hypothetical ancestral mollusc (HAM) to illustrate the … Meer weergeven Opinions vary about the number of classes of molluscs; for example, the table below shows seven living classes, and two extinct ones. Although they are unlikely to form a … Meer weergeven switch generations
List of mollusks Britannica
Web8 jun. 2024 · Bivalvia is a class of marine and freshwater molluscs with laterally compressed bodies enclosed by a shell in two hinged parts. Bivalves include clams, oysters, mussels, scallops, and numerous other families of shells. The majority are filter feeders and have no head or radula. The gills have evolved into ctenidia, specialised organs for ... WebMussel common names follow Turgeon et al. (1998) with minor exceptions, but they are … Web1 jan. 2005 · Common and Scientific Names of Aquatic Invertebrates from the United States and ... [Collins and Taggart 2009], cnidaria and ctenophora [Cairns et al. 2002], mollusks [Turgeon et al. 1998], ... switch generic type