Sipuncula (Peanut Worm)

Question 1

Apomorphies in Sipuncula

Answer 1

Eversible (turn inside out) circular muscle, Tentacles, J-shaped intestinal tract, intestinal ciliary groove (trench in lining covered in cilia for increased surface area)

Question 2

Lifestyle of Sipuncula

Answer 2

Marine, blind burrows or crevice, suspension/deposit feeders, tentacles