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snail over the sleeping frog

Snail Over The Sleeping Frog

Snails that respire using a lung belong to the group Pulmonata, while those with gills form a paraphyletic group; in other words, snails with gills are divided into a number of taxonomic groups that are not very closely related. Snails with lungs and with gills have diversified widely enough over geological time that a few species with gills can be found on land, numerous species with a lung can be found in freshwater, and a few species with a lung can be found in the sea.
Most snails have thousands of microscopic tooth-like structures located on a ribbon-like tongue called a radula. The radula works like a file, ripping the food into small pieces.

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Album name:Fauna & Flora
Rating (1 votes):55555
Keywords:#snail #sleeping #frog
Filesize:48 KiB
Date added:Jul 10, 2013
Dimensions:700 x 389 pixels
Displayed:195 times
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