5
Question
The most primitive mollusc belongs to the genus
The most primitive mollusc belongs to the genus
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Solution
The correct option is A Neopilina
Neopilina is a segmented mollusc and has the characters of both phylum Annelida and phylum Mollusca. Thus, it is considered as a primitive mollusc and a connecting link between Annelida and Mollusca. It shows internal segmentation and presence of nephridia like annelids and presence of mantle, shell and foot like Mollusca. Head bears tentacles and foot is the disc like with flat creeping sole. Shell is spoon or cup-shaped. Thus, the correct answer is option B.
Neopilina is a segmented mollusc and has the characters of both phylum Annelida and phylum Mollusca. Thus, it is considered as a primitive mollusc and a connecting link between Annelida and Mollusca. It shows internal segmentation and presence of nephridia like annelids and presence of mantle, shell and foot like Mollusca. Head bears tentacles and foot is the disc like with flat creeping sole. Shell is spoon or cup-shaped.
Thus, the correct answer is option B.
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