A)
Genus name Two characters Phylum Aslericis [a] Spiny skinned Echinoder- mate [b] Water vascular system
B)
Genus name Two characters Phylum Sycon [a] Pore bearing Porifera [b] Canal system
C)
Genus name Two characters Phylum Periplaneta [a] Jointed appendages Arthropoda [b] Chitinous exoskeleton
D)
Genus name Two characters Phylum Pila [a] Body segmented Mollusca [b] Mouth with Radula
Correct Answer: D
Solution :
Molluscans are soft bodied animals. Their body is unsegmented with a distinct head, muscular foot and visceral hump. In pila the buccal cavity contains a rasping organ, the radula with transverse rows of teeth.
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