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B
1-a, 2-c, 3-b
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C
1-c, 2-b, 3-a
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D
1-c, 2-a, 3-b
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Solution
The correct option is D 1-c, 2-a, 3-b
Organisms belonging to phylum Arthropoda have jointed appendages. Here, arthros means joint and poda means appendages. E.g. Apis, Anopheles, Culex, etc.
Phylum Echinodermata includes spiny skinned organisms. Here echinos means hedgehog (spiny mammal) while derma means skin. They also have a skeleton made up of calcium carbonate. E.g. Sea star, sea urchins, etc.
The body of molluscs is unsegmented with a distinct head, muscular foot and a visceral hump. Foot is used for locomotion. E.g. Snails, mussels, etc.