Porifera is neither diploblatic nor triploblastic because they have cellular level of organization.
diploblastic and triploblastic animals are those which have tissue level of organization.

Porifera is diploblastic or triploblastic?
Porifera, commonly known as sponges, are multicellular organisms that belong to the phylum Porifera. They are considered to be one of the simplest animals, lacking true tissues and organs. When it comes to their embryonic development, sponges are generally considered to be diploblastic.

Explanation:

Diploblastic:
Diploblastic organisms have two germ layers during embryonic development: the ectoderm and the endoderm. The ectoderm is the outer layer, while the endoderm is the inner layer. These two layers give rise to various tissues and organs in more complex animals. However, in sponges, these germ layers are not well-defined and do not give rise to specialized tissues or organs. Instead, they give rise to different types of cells that perform various functions within the sponge's body.

Sponge Anatomy:
Sponges have a simple body structure consisting of an outer layer called the pinacoderm, which is made up of flattened cells. Inside the sponge, there is a jelly-like layer called the mesohyl, which contains various types of cells, including choanocytes and amoebocytes. These cells are responsible for carrying out essential functions such as feeding, digestion, and reproduction.

Absence of True Tissues:
Unlike more complex animals, sponges lack true tissues and organs. Instead, their cells are loosely organized and can change their functions based on the needs of the sponge. This loose organization allows for a high degree of flexibility and adaptability in sponges.

Conclusion:
In conclusion, Porifera or sponges are considered to be diploblastic organisms. They have two germ layers, the ectoderm and endoderm, during embryonic development. However, it is important to note that sponges lack true tissues and organs, and their cellular organization is quite different from that of more complex animals.