EVERYDAY SCIENCE

Detailed explanation-1: -Cnidarians consist of two cell layers: an outer ectoderm and an inner endoderm (the gastrodermis) that lines the coelenteron.

Detailed explanation-2: -Most cnidarians have two tissue layers. The outer layer, the ectoderm, has cells that aid in capturing food and cells that secrete mucus. The inner layer, the endoderm, has cells that produce digestive enzymes and break up food particles. The jellylike material between the two layers is called the mesoglea.

Detailed explanation-3: -The outer ectoderm, or epidermis, contains the cnidocysts, the stinging cells that are characteristic of the phylum. The inner endoderm, or gastrodermis, lines the gut, which in some cnidarians may be divided up by septa (as in the Anthozoa) or elaborated into branching canals (as in many Scyphozoa.

Detailed explanation-4: -The body wall of a cnidarian consists of three layers, an outer layer known as the epidermis, a middle layer called the mesoglea, and an inner layer referred to as the gastrodermis. The epidermis contains a collection of different types of cells.

Detailed explanation-5: -The cnidarian body consists of a central blind sac, the gastrovascular cavity, enclosed by a body wall of two layers, the outer epidermis and the inner gastrodermis, with a gelatinous connective tissue layer (the mesoglea) between the two layers.