Which one of the following phyla is correctly matched with its two ...

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Which one of the following phyla is correctly matched with its two general characteristics?
\( \mathrm{P} \)
(a) Echinodermata - pentamerous radial symmetry
W. and mostly internal fertilization
(b) Mollusca - normally oviparous and development through a trochophore or veliger larva
(c) Arthropoda - body divided into head, thorax and abdomen and respiration by tracheae
(d) Chordata - notochord at some stage and separate anal and urinary openings to the outside.
(2008)
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