Student Project Figures Figure 5 Figure 22: A section of a S. brakenhielmi zooid cut perpendicular to the base (posterior) of the animal and stained with H.E. Visible in this section are the two anterior siphons; incurrent (left) and excurrent (right), the cerebral ganglion, endostyle, branchial basket (and gill slits), a transparent tunic and a blood-filled body wall (mantle). Also captured are two small pallial buds that have detached from the large zooid and are insitu within the tunic. The large tube-like feature on the right side of the zooid that extends from the base to the excurrent siphon is actually just an infold in the body wall. Scale: 500 µm Figure 4 Figure 5 Figure 6 Figure 7 Figure 8