Answer:
The answer is TRUE. Most cnidarians have two layers of cells that are organized into tissues: Epidermis and Gastrodermis.
Step-by-step explanation:
Cnidarians' basic body organization is simple: It is a hollow structure composed of two cellular layers:
- epidermis, which is the external layer,
- gastrodermis which is the internal layer, composed by lining cells in the gastrovascular cavity.
Between these two there is the mesoglea that varies from a thin, non-cellular membrane to a mucous, fibrous, thick membrane with amebocytes.
Epidermis and gastrodermis originate from two embryonic tissues, the ectoderm, and the endoderm.
The epidermis is formed of five types of cells with different functions: epitheliomuscular, interstitial, cnidoblasts, secretors, and sensorial.
The gastrodermis is composed of nutritive cells, glandular enzymatic cells, secretory cells, and sensorial cells.