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| | Biology of slugs |
 | | DIGESTION When feeding the radula of the slug shreds the food to little pieces,which go into the buccal cavity and the oesophagus.There are getting mixed with mucus and saliva.The foodthen goes into the crop where a large amount of juice is produced by the digestive gland. |
 | | SENSES Like snails slugs have most of their sensory receptors concentrated around the head.Nerve knots,also named ganglia,process information gathered from the two pairs of tentacles.The lower,shorter,pair,the sensory tentacles, is used for smelling and maybe tasting.The upper,longer,pair,the optic tentacles is sensitive to light and smell.Although slugs can't see colors,they are able to distinguish light from dark. |
 | | Often a slug will follow another slugs mucus trail and eat it.Then the slugs circle around eachother.The genitalia are being pushed out,often visible as a bluish swelling on the right side of the body.The slugs move closer together and the genitalia make contact.Sperm is transferred in the form of spermatophores. |
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