Answer:
Traditionally only four cell types have been described in Trichoplax, upper and lower epithelial cells, gland cells within the lower, feeding epithelium, and fiber cells sandwiched between the epithelia. No organs or specialized nerve or muscular cells are present.
The Four Main Types of Cells
-Epithelial Cells. These cells are tightly attached to one another. ...
-Nerve Cells. These cells are specialized for communication. ...
-Muscle Cells. These cells are specialized for contraction. ...
-Connective Tissue Cells.