The mollusc ______ may be adapted for locomotion, for attachment to substratum, or for a combination of functions.
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The mollusc species that may be adapted for locomotion, attachment to substratum, or a combination of both functions is the gastropod.
Gastropods have a unique body structure that allows them to adapt to various environments, and their foot is well-suited for locomotion and attachment. The foot is a muscular structure located on the bottom of the gastropod that can act as a suction cup, allowing it to attach to various surfaces. This adaptation allows gastropods to remain securely attached to rocks, corals, and other submerged objects, even in strong ocean currents.
Furthermore, gastropods can also utilize their foot to crawl along surfaces, using a wave-like motion to propel themselves forward. This movement is facilitated by the presence of cilia on the foot surface, which helps to create a current of water that propels the animal forward.
In summary, the gastropod is a highly adaptable mollusk species that can use its foot both for attachment to substratum and locomotion, making it a successful species in various aquatic environments.