Question

Match the phyla with their characteristic feature-

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{1.Arthropoda}& \text{a) Spiny skinned}\\ \text{2.Echinodermata}& \text{b) Muscular foot}\\ \text{3.Mollusca}& \text{c) Jointed appendages}\end{array}$

• A. 1-c, 2-b, 3-a
• B. 1-c, 2-a, 3-b
• C. 1-a, 2-c, 3-b
• D. 1-b, 2-c, 3-a

Answer 1

The correct option is B 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.