The body wall of cnidarians and ctenophores consist of:

A) three tissue layers
B) a single epidermal layer
C) loosely organized cells
D) two epidermal layers with scattered mesophyll cells in between
E) inner and outer cell layers separated by a jelly-like mesoglea

Cnidarians

Cnidarians are a phylum of aquatic invertebrates known for their distinctive body structure characterized by a jelly-like middle layer and specialized cells called cnidocytes for capturing prey.

Ctenophores

Ctenophores, also known as comb jellies, are marine invertebrates characterized by their eight rows of ciliary plates used for swimming.

Mesoglea

Jellylike layer between the epidermis and gastrodermis in cnidarians and ctenophores.