A) Genus Name Two characters Phylum Pila (i) Body segmented Mollusca (ii) Mouth with Radula
B) Asterias (i) Spiny skinned Echinodermata (ii) Water vascular system
C) Sycon (i) Pore bearing Porifera (ii) Canal system
D) Periplaneta (i) Jointed appendages Arthropoda (ii) Chitinous exoskeleton
Correct Answer: A
Solution :
Molluscs are bilaterally symmetrical, triploblastic, coelomate, soft bodied animals. Their soft body is covered by a calcareous shell and is unsegmented with a distinct head, muscular foot and visceral hump. e.g., Pila (apple snail). Sepia (cuttle fish), Pinctada (pearl oyster), etc.
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