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. … 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 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. … 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 … 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 strategies are predominant. Some feed … Meer weergeven Fossil record Good evidence exists for the appearance of gastropods (e.g., Aldanella), cephalopods (e.g., Plectronoceras, Nectocaris) and bivalves (Pojetaia, Fordilla) towards the middle of the Cambrian period, c. 500 million years ago, … Meer weergeven Web11 apr. 2024 · Phylum Mollusca. Phylum Mollusca consists of an outsized group of animals. Features are: Bilaterally symmetrical and triploblastic. Less segmented body. …
Palaeos Metazoa: Mollusca: Phylogeny
WebTitle: MOLLUSCS 1 MOLLUSCS 2 Phylum Mollusca Subphylum Amphineura Class Polyplacophora chitins Subphylum Cyrtosoma Class Monoplacophora almost extinct … WebPhylum Mollusca is the second largest phylum in the Animal kingdom. They play a very important role in the lives of humans. They are a great source of jewellery, food and other natural pearls. Explore more: M ollusca. Here are solved important MCQs on Mollusca, types and its importance. 1. Octopus belongs to the class_____. (a) Mollusca (b ... once bitten twice shy wow 10 player
PPT – MOLLUSCS PowerPoint presentation free to view - id: …
WebList of mollusc orders. 1 language. Cuttlefish of the order Sepiida. Pinna nobilis shell and byssus. List of mollusc orders illustrates the 97 orders in the phylum Mollusca, the … Webadditional source Ponder W.F. & Lindberg D.R. (eds.) 2008. Phylogeny and Evolution of the Mollusca. University of California Press, Berkeley, 488 pp. http://palaeos.com/metazoa/mollusca/phylogeny.html once bitten twice smitten