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AnatomySlugs and snails space members the the phylum Mollusca, along with their crusty friends, the clams and oysters and also squid, cuttlefish and octopus. Slug have evolved from snails and many varieties still maintain a vestigial shell concealed under your mantle. The remnant covering is used generally for calcium storage, rather than protection.
The slug’s cousin, the snail, has an outer shell that he can pull his soft small body right into when a raccoon bring away him. The snail requirements to have big enough calcium shop in its environment to form this much more substantial shell. The covering serves together a safe refuge from smaller predators and also protection during dry weather conditions.
The slug is a gastropod, which equates to “stomach-foot.” A cheese or snail moves by rhythmic waves of muscular convulsion on the underside that its foot. At the exact same time a great of rubber is secreted, which help smooth the slug’s path throughout the ground.
Slugs and snails have actually two pairs of retractable tentacles on their head. The upper, optic tentacles, have light-sensitive eyespots top top the ends. Each eye-stalk deserve to move independently and also can it is in re-grown if lost. The eye-stalks are additionally used because that smell. Reduced on the slug’s confront are two smaller tentacles for feeling and also tasting. The rasping mouth components that will chew up her lettuce seedlings space under this tentacles. Slugs eat using a radula, a rasping, tongue-like organ, extended with countless tiny tooth-like protrusions dubbed denticles.
Body openings encompass the anus and also genitals, i m sorry are hidden under the mantel. The odd position of this openings so far forward on the body is a result of the slugs evolutionary descent from snails. In a snail these openings should be outside the covering (nobody wants to poop in their own shell after all). Slugs room hermaphrodites v both male and also female sex organs. A huge respiratory pore, typically on the best side, called a pneumostome, leader to a single lung.
The keel or carina is a ridge the runs the size of the earlier in part slug species.
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As you have the right to see, the slug is a very dedicated creature, carefully constructed because that living in moist places, feeding on vegetables matter, (although some varieties are omnivorous and also enjoy the occasional earthworm or other gastropod,) and also living life at a thoughtful, Buddha-like pace.