Final answer:
The phyla with U-shaped alimentary canals and a crown of ciliated tentacles are Ectoprocta and Brachiopoda, members of the Lophotrochozoa superphylum. So, the correct answer is option e.
Step-by-step explanation:
The two phyla that have characteristic U-shaped alimentary canals and a crown of ciliated tentacles are the Ectoprocta and the Brachiopoda. These are part of the superphylum Lophotrochozoa, specifically indicated by their lophophore, a structure involved in feeding that consists of a set of ciliated tentacles surrounding the mouth.
The Ectoprocta, also known as Bryozoa, are mostly sessile aquatic organisms that form colonies, while the Brachiopoda phylum comprises marine animals with a shell and a stalk that resembles clams and are often found attached to the sea bed.
So, the correct answer is option e.