Zoology 10th Edition by Stephen Miller,John Harley

تمرين 3

The phyla covered in this chapter are bilaterally symmetrical and triploblastic. They are classified as lophotrochozoans based on similarities in ribosomal RNA genes. Many members of the Lophotrochozoa possess either a trochophore larval stage or a lophophore.
What is the significance of the trochophore and lophophore in protostome taxonomy?