Web4. Visceral Mass. Another characteristic of mollusks is the presence of a visceral mass. This is a large organ that contains the animal’s major internal organs, such as the heart, lungs, and digestive system. The visceral … 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 proportion of undescribed species is very high. Many taxa remain poorly studied.
mollusk - Kids Britannica Kids Homework Help
WebMollusks are a invertebrate group which constitute one of the most important phyla and with the largest number of species within the animal Kingdom: Mollusca.In fact, there are approximately 93,000 living species and about 70,000 fossil species. In this Green Ecologist article we show you what are mollusks, their characteristics, types and examples with … WebPhylum Mollusca includes animals with soft bodies that are triploblastic and bilaterally symmetrical and coelomate. Molluscs are sluggish invertebrates that have a thin envelope or mantle covering their visceral organs. They are diverse species of animals that form an important part of the world ecosystem. They are mostly found in the deep seas ... how to write a personal brand statement
Bivalve Definition, Characteristics, Species, Classification, & Facts
WebMar 25, 2008 · Abstract. This book brings together thirty-six experts on the evolution of the Mollusca to provide an up-to-date review of its evolutionary history. The Mollusca are the second largest animal phylum and boast a fossil record of over 540 million years. They exhibit remarkable anatomical diversity and include the bivalves (scallops, oysters, and ... WebMar 5, 2024 · For example, several mollusk species no longer have shells. Do you know which ones? Two unique features of mollusks are the mantle and radula (see Figure above). ... Mollusks are invertebrates such as … WebDec 13, 2024 · Common Name: Mollusks or molluscs. Basic Animal Group: Invertebrate. Size: Microscopic to 45 feet in length. Weight: Up to 1,650 pounds. Lifespan: Hours to centuries—the oldest is known to have … how to write a personal background