Friday, May 23, 2008

Soft Bodies (Mollusca)

Soft Bodies (Mollusca)

Mollusca are so named because of their soft bodies (Greek : mollis - soft). The soft bodies of many of the 110,000. Mollusca species are protected by a hard shell, however. Even those as slugs, still hae vestigial traces of a sheel.

The most common classes are Polyplacophora characterised by a shell composed of 8 overlapping plates. such as the Lined Chitton (Tonicella lineata), Gastropoda commonly known as slug, Bivalvia or Bivalves such Cephalopoda comprising octopus and squid as well as the Nautilus.

Other classes are Monoplacophora, scaphoda (tooth shells)

1 comment:

hashimah.harun said...

Animalia ialah kumpulan yang besar dan perlu dihuraikan pecahannya.