Write a note on Snail?
Habitat: -
Most species are marine but some live in damp places.
Size: -
They range in size from microscopic to 60 cm.
Structure: -
Its body is enclosed in a calcareous wiled shell. This shell has many compartments.
Last one is the largest and snail lives in it.
Eyes and tongue: -
It has two tentacles which has two eyes. Radulla a tongue like structure is used for
feeding.
Locomotion: -
A big muscular foot is used for locomotion.
Formation of Pearl: -
When sand particles enter into the body. Shell secrets many layer of shell forming
matter around this foreign body-forming pear. This process completed in years.