Question

In which one of the following the following the genus name its tow characters and its phylum are not correctly matched, whereas the remaining three are correct

• A. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Asterias}& \text{(a) Spiny Skinned}& \text{Echinodermata}\\ & \text{(b) Water vascular System}& \end{array}$
• B. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Sycon}& \text{(a) Pore bearing}& \text{Porifera}\\ & \text{(b) canal system}& \end{array}$
• C. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Periplanata}& \text{(a) Jointed appendages}& \text{Arthropoda}\\ & \text{(b)Exoskeleton}& \end{array}$
• D. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Pilia}& \text{(a) Body segmented}& \text{Mollusca}\\ & \text{(b) Mouth with radula}& \end{array}$

Answer 1

The correct option is D

$\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Pilia}& \text{(a) Body segmented}& \text{Mollusca}\\ & \text{(b) Mouth with radula}& \end{array}$

Pila is a genus of large freshwater snails which belongs to the phylum molluscs. Molluscans are soft bodied animals. Their body is unsegmented with a distinct head, muscular foot and viseceral hump. In pila the buccal cavity contains a rasping organ, the radula with transverse rows of teeth.