In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas…

3 2012 AIPMT-PRE Animal KingdomClassification of animals Easy
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?
A (1) Periplaneta – (a) Jointed appendages (b) Chitinous exoskeleton – Arthropoda
B (2) Pila – (a) Body segmented (b) Mouth with radula – Mollusca
C (3) Asterias – (a) Spiny skinned (b) Water vascular system – Echinodermata
D (4) Sycon – (a) Pore bearing (b) Canal system – Porifera

Detailed Solution

Pila is a mollusc; molluscs have a soft, unsegmented body with a head, muscular foot and visceral hump, and a mouth with a radula.
So 'body segmented' is wrong for Pila.
The characters given for Periplaneta, Asterias and Sycon are correct.

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