Which one of the following phyla is correctly matched with its two general characteristics?
A. Echinodermata - pentamerous radial symmetry 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.
Answer:C
Which one of the following phyla is correctly matched with its two general characteristics?
A. Echinodermata - pentamerous radial symmetry 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.