A proportionally large muscle called a 'foot'.
Muscular system.
Multicellular organisms typically use the muscular and skeletal systems to move. The muscular system provides the force needed for movement, while the skeletal system provides structure and support for the muscles to act upon.
The muscular system and the skeletal system work together to produce movement. Muscles contract and pull on bones, causing them to move at the joints. The skeletal system provides structure and support for the muscles to generate movement.
Molluscs, which belong to the animal phylum Mollusca, have a single, "limpet-like" shell on top. According to wikipedia, the shell is secreted by a mantle that covers the upper surface, and the underside consists of a single muscular "foot".
The skeletal system provides support and structure to the body, while the muscular system enables movement by contracting and relaxing muscles attached to bones. Together, these systems work in harmony to allow for a wide range of movements and provide stability to the body.
flagellum (flagella)
flagellum
Muscular people are strong.
The muscular man looked like he was on steroids. Muscular is an adjective
yes you uses your muscles for any movement no matter how small. you use your finger muscles mainly while using video games
Molluscs have many different ways of getting their food, because molluscs have filled many different ecological niches. For some, they CATCH it: predatory squid and octopus for example, are molluscs with well develeped eyes and quick manueverability for hunting prey. Others are filter feeders, using their mucous lined gills to capture food that is in the water column. For example, when oysters (a mollusc) were plentiful in the Chesapeake Bay, it was almost crystal clear, since they were effectively taking out the life and organic debris that was floating in the water. Other molluscs are grazers, and they use a rasp-like structure on their muscular foot to scrape away at mats of algae. You can see this phenomenon if you've ever seen a snail in a fish tank: you can actually see its feeding trail as it grazes on the algae on the sides of the tank. Not all snails are gentle herbivores though: the venomous cone snail hunts for marine worms along the bottom of the sea, stining and paralyzing their prey before they consume them. So it is really not a simple answer to the question of how do molluscs get their food: the answer depends on WHICH mollusc you are talking about, and there are many feeding mechanisms to discover in your research on this topic.
One class of molluscs that lacks a radula is the Bivalvia, which includes clams, mussels, and scallops. Instead of a radula, these organisms have two shells that they use to filter feed. They do not require a radula for scraping or grazing on food sources like other molluscs.