Gastrodermis is derived from
Endoderm
Mesoderm
Ectoderm
Trichoderm
The gastrodermis is the inner layer of the body wall seen in Cnidarians (Coelenterates). It is derived from the endoderm. It surrounds the gastrovascular cavity and consists of various cell types, including nutritive-muscular cells, gland cells, and interstitial cells. The endoderm is one of the primary germ layers formed during embryonic development, and it gives rise to the innermost tissues and organs of the body in many animals. Hence, the correct answer is option 1.