Give four general characters of phylum mollusca.
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Explanation:
habitat: They are mostly marine. ...
Body Form: The body of molluscs is un-segmented with a distinct head, muscular foot and visceral hump. ...
Symmetry: They usually show bilateral symmetry. ...
Shell: ...
Mantle (Pallium): ...
Body wall: ...
Body cavity: ...
Digestive tract:
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They are mostly marine, few fresh water and also found in damp soil. It is the second largest phylum in the animal kingdom. Body is unsegmented (except Neoplina) and bilaterally symmetrical (except few twisting forms like Pila). They have organ system grade of body organization
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