In Mollusca, the file-like rasping organ used for feeding is called:
ANematocyst
BChoanocyte
CNotochord
DRadula — present in the anterior head region of most molluscs (Pila, Sepia, Loligo, Octopus etc.)
Answer & Solution
Correct answer: D. Radula — present in the anterior head region of most molluscs (Pila, Sepia, Loligo, Octopus etc.)
Radula is a chitinous, ribbon-like rasping/scraping organ in the mouth of most molluscs. The mantle covers the visceral hump; the mantle cavity holds gills (respiratory + excretory). Examples: Pila (apple snail), Sepia (cuttlefish), Loligo (squid), Octopus.
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