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Which one of the following phyla is correctly matched with its two general characteristics?

1. Arthropoda - Body divided into head, thorax and abdomen and respiration by tracheae
2. Chordata - Notochord at some stage and separate anal and urinary openings to the outside
3. Echinodermata - Pentamerous radial symmetry and mostly internal fertilization
4. Mollusca - Normally oviparous and development through a trochophore or veliger larva

Correct answer: Chordata - Notochord at some stage and separate anal and urinary openings to the outside

Solution

Chordata is correctly matched with its two general characteristics: notochord at some stage and separate anal and urinary openings to the outside.

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