Another member of this phylum, pinna nobilis, produces sea silk.
There is debate as to whether several members of this phylum should be sorted into Aculifera and Conchifera or into a testara superclade. One notable feature of several members of this phylum is created when the engrailed gene is iteratively expressed in the ectoderm. Members of this phylum uses a pair of osphradia to smell. The Hapalochlanea genus creates an incurable poison and has characteristic blue rings. Another member of this phylum, pinna nobilis, produces sea silk. Another member of this phylum, hexaplex trunculus, produces 6, 6-dibromoindigo. Members of this phylum feed using an Â apparatus containing an (*) odontophore and radula, and move using a muscular foot. Their mantles secrete concholin and chitin to form an aragonite-containing shell. For 10 points, name this phylum that includes gastropods like snails and cephalopods like squid.
There is debate as to whether several members of this phylum should be sorted into Aculifera and Conchifera or into a testara superclade.
Molluscs