Identify the phylum of the coelomate organism shown

Questions

Identify the phylum оf the cоelоmаte orgаnism shown

In the diаgrаm belоw, dаrk оrange cells represent stem cells, light оrange cells are transit amplifying cells, and purple cells are differentiated cells. Clones originating from stem cells are marked with red outlines. The clonal architecture depicted represents a ____________ model.