Which phylum has Blind sac type of body plan ?

Which of the following are triploblastic, acoelomate with blind sac type of body plan, and parechyma cells originating from mesoderm fill up the cavities of the body ?

Which of the following are triploblastic, acoelomate with blind sac type of body plan, and parechyma cells originating from mesoderm fill up the cavities of the body ?

Incomplete alimentary canal with blind sac type of body planis present in

Incomplete alimentary canal with blind sac type of body planis present in

Blind sac body plan is shown by

Blind sac body plan is found in

Blind sac body plan is found in

Blind sac body plan is found in

Blind sac body plan is shown by