Give a brief account of phylum mollusca

1.	Give a brief account of phylum mollusca
Answer» Basically bilateral and protostomial eucoelomate eumetazoans whose soft body (L., mollis or molluscum = soft) is unsegmented and enclosed within a skin–fold (mantle) which usually secretes a calcareous shell.- About 80,000 existing and 35,000 extinct species known. Aquatic or terrestrial.- Snails and mussels found along banks of freshwater bodies and the oysters, shanks (shoes conch–shell is commonly blown in religious ceremonies) and cowries of the sea are common molluscs.Malacology or Conchology is the branch of study of molluscs and their shells.Molluscs are of some economic importance; man uses some as food; shells of some are used for making buttons, beads, etc

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