The organisms given in the image belong to which of the following phylum?
A
Echinodermata
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B
Mollusca
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C
Nematoda
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D
Arthropoda
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Solution
The correct option is B Mollusca
All these organisms belong to phylum Mollusca. They are soft bodied animals.
They have an unsegmented body with a distinct head, muscular foot and a visceral mass.
These are terrestrial or aquatic (freshwater or marine) organisms.
Their body is covered with a calcareous shell. It is secreted by mantle and is made up of calcium carbonate. This shell can be internal, external or absent.