Question

Complete the following chart.

Body cavity
Absent
Absent
Pseudocoelom
Present

Germ Layer
-------------
Triploblastic
-------------
-------------

Phylum
Porifera
-----------
Aschelminthes.
Arthropoda

Answer 1

1. Members of phylum porifera are neither triploblastic or nor diploblastic. Because they have cellular level of organisation.( diploblastic and triploblastic animals are those which have tissue level of organisation)
2. Acoelomate and triploblastic animals are Platyhelminthes.
3. Aschelminthes are pseudocoelomate and triploblastic.
4. Arthropoda are coelomate and triploblastic animals.

Answer 2

Here is your answer with attachment