Join Yahoo Answers and get 100 points today. Cephalopoda is the class of mollusc's without shells. Top Answer. A) Gastropoda B) Polyplacophora C) Bivalvia D) Cephalopoda E) Arthropoda Answer: A Topic: Concept 33.4 Skill: Application 30) Which molluscan class includes chitons? Snail eating thrushes still have to crack their prey's shells open on a suitable stone to get to the interior. ... without a full-sized shell, their soft tissues are prone to desiccation. Gastropods are the most diverse family of mollusks, including over 60,000 species of snails and slugs that live in marine, freshwater, and terrestrial habitats. The Evolution of the Mollusc Shell . The organism that has a bilaterally symmetric unsegmented body and is capable of moving on its own with a muscular appendage which is encased in a large shell that seems to be attached to its body belongs to the phylum Mollusca. The word that solves this crossword puzzle is 8 letters long and begins with U. Terrestrial mollusc with an elongated body and no shell Crossword Clue . Login to reply the answers Post; Still have questions? 2009-11-16 14:19:58 2009-11-16 14:19:58. The correct answer would be D. Mollusca. The slug life form (with a reduced or invisible shell) has evolved a number of times in different snail families, but this shell-free body form has imparted similar behavior and physiology in all species of slugs. How can we … 0 0 0. What is the only group of Mollusca that does NOT have a radula? Get your answers by asking now.
TERRESTRIAL MOLLUSC 'TERRESTRIAL MOLLUSC' is a 18 letter phrase starting with T and ending with C Crossword clues for 'TERRESTRIAL MOLLUSC' Related Questions. Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. There is a layer of tissue called the mantle between the shell and the body. Those groups still do have a shell, but it is glassy and translucent, hence the groups' name. This field guide is intended for use in identifying 27 terrestrial mollusk species listed in Table C-3 or page C-6 of the Record of Decision for the Northwest Forest Plan, which require survey prior to ground disturbing activities. Mollusks also have a coelom, a complete digestive system, and specialized organs for excretion. Terrestrial slugs are measured from the head, excluding the … Various taxonomic families of land slugs form part of several quite different evolutionary lineages, which also include … Topic: Concept 33.4 Skill: Knowledge 31) A radula is present in members of which class(es)? A) Porifera B) Cnidaria C) Platyhelminthes D) Nematoda. On occasion, terrestrial slugs and snails may feed on conspecifics, other species of molluscs and their eggs, and calcareous material (e.g., rocks, headstones). Ask Question + 100. Join. They must generate protective mucus to survive. What is the name of a terrestrial mollusc without shell? Chitons.

Apart from slugs, which have no external shell left (like Arionand Limaxslugs), there are also different grades of shell reduction among so called semi-slugs (generally also referred to as slugs, just like the complete kind), but also among glass snails(Vitrinidae) and true glass snails(Zonitidae). Aquatic gastropods include both marine and freshwater species, and all terrestrial mollusks are gastropods. Is a sunflower a detritivore. Many species are most active just after rain because of the moist ground. Trending Questions. Terrestrial molluscs without shells (i.e., "slugs") are still snails, and belong to Class Gastropoda. Gastropoda includes shell-bearing species as well as species without shells.

One of them, the Daudebardias (Daudebardiinae), for example, are a family of predator snails living underground and hunting earthworms, that are caught with the radula and swallowed whole.. Life underground made necessary the reduction of the cumbersome shell. The width should be taken at the widest part of the shell when the shell is oriented so that aperture faces the observer; the width is measured from the side of the body whorl to the outermost side of the aperture (mouth).
Slugs are snails without a visible shell (some have an internal shell and a few have a greatly reduced external shell). Among terrestrial snails, as well as among their marine relatives, groups appear, with species bearing a shell in a different degree of reduction, up to completely shell-less snails or slugs. Most mollusks have tentacles for feeding and sensing, and many have a muscular foot. But they still remain their best and most important protection against dryness and their many enemies . A terrestrial mollusk without a shell belongs to which clade? Which mollusk group can be described as having several calcium carbonate plates along their dorsal side?