describe cnidarians
Cnidarians are said to be the simplest organisms at the tissue grade of organization. Their cells are organized into true tissues. Cnidarians are essentially bags made of two cell layers. The outer layer, or epidermis, contains the cnidocysts, the stinging cells that are characteristic of the phylum.nidarians are said to be the simplest organisms at the tissue grade of organization. Their cells are organized into true tissues. Cnidarians are essentially bags made of two cell layers. The outer layer, or epidermis, contains the cnidocysts, the stinging cells that are characteristic of the phylum.
The Cnidarians include the hydroids, jellyfish, anemones, and corals. All Cnidarians have tentacles with stinging cells in their tips which are used to capture and subdue prey. In fact, the phylum name Cnidarian literally means stinging creature..The stinging cells are called cnidocytes and contain a structure called a nematocyst. The nematocyst is a coiled thread-like stinger.n fact, the phylum name Cnidarian literally means stinging creature.. The stinging cells are called cnidocytes and contain a structure called a nematocyst. The nematocyst is a coiled thread-like stinger.