In which one of the following, the genus name, its two characters and its phylum are not correctly matched? `{:("Genus name","Characters","Phylum"),((d)"Periplaneta",(i)"Jointed appendages ","Arthropoda"),(,(ii)"Chitinous exoskeleton",):}`

Options

A. `{:("Genus Name"," Two characters", "Phylum",),("(a) Pila","(i) Body segmented","Mollusca",),(,"(ii) Mouth with Radula",,):}`
B. `{:("Genus Name"," Two characters", "Phylum",),("(b) Asterias","(i) Spiny skinned","Echinodermata",),(,"(ii) Water vascular system",,):}`
C. `{:("Genus Name"," Two characters", "Phylum",),("(c) Sycon","(i) Pore bearing","Porifera",),(,"(ii) Canal system",,):}`
D. `{:("Genus Name"," Two characters", "Phylum",),("(d) Periplaneta","(i) Jointed appendages","Arthropoda",),(,"(ii) Chitinous exoskeleton ",,):}`

Answer

A

Explanation

Option (a) is incorrect because 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 nad visceral hump
e.g. Pila (apple snail), Sepia (cuttle fish), Pinctada (pear) oyster), etc.