WebWhat makes a mollusk open or close? In this bivalve, it is not the brain (there is no brain). But there is a nervous system, and the nervous system reacts to stimuli.. Nervous System. The nervous system of mollusks varies greatly depending on the particular class. In general, it is more complex than those of roundworms or flatworms.Bivalves have a … WebThe main digestive system of the molluscs is found in the visceral mass which contains the organs of the digestive, excretory, and reproduction. The food is taken up cells lining …

11.8: Mollusks - Biology LibreTexts

WebThe digestive system of gastropods has evolved to suit almost every kind of diet and feeding behavior. Gastropods ( snails and slugs) as the largest taxonomic class of the mollusca are very diverse: the group includes carnivores, herbivores, scavengers, filter feeders, and even parasites. In particular, the radula is often highly adapted to the ... WebMollusks and Annelids. The mollusks are a diverse group (85,000 described species) of mostly marine species. They have a variety of forms, ranging from large predatory squid and octopus, some of which show a high degree of intelligence, to small grazing forms with elaborately sculpted and colored shells. The annelids traditionally include the ... redmonds hardware

FINAL MODULE - PHYLUM MOLLUSKA.docx - PHYLUM MOLLUSCA…

WebMainly because the digestive tracts of Mollusca are primitive and need external forces to churn and move the food when other developments have not been made to do so. The use of a radula is common among the … WebNov 30, 2024 · With its three main body parts, the overall structure of a mollusk is simple, but its digestive system is far more intricate. While there are slight variations depending on if the mollusk is a... WebMolluscs have a complete digestive tract surrounded by a small coelom. The molluscan circulatory system is composed of a series of blood sinuses or cavities, rather than … redmonds gorey