Friday, November 25, 2011

characteristics of class -SCAPHOPODA of Mollusca

The word Scaphopoda is derived from two Greek words.They are scapha=boat and podos=foot. So it includes molluscas having boat shaped body. However the characteristics can be listed as below.
1)They are exclusively marine animals.
2) They have bilaterally symmetrical, elongated body and enclosed in a tusk-like shell open at both ends.
3) They do not have eyes, tentacles and gills.
4) They have tubular Mantle completely enclosing the body.
5) They have mouth surrounded by lobular process or outgrowths.
6) They have reduced foot used for digging .
7) They have rudinmentary heart.
8) They have sexes in separate bodies.

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