EVERYDAY SCIENCE

Detailed explanation-1: -Cnidarians are characterized by having specialized stinging cells (cnidocytes) that have venomous organelles called cnidae or nematocysts. This specialized cell is the defining synapomorphy of the phylum. In addition, these animals have two cell layers (diploblastic) with jelly-like mesogloea in between.

Detailed explanation-2: -Cnidaria are a large, largely marine phylum of planktonic, benthic, and interstitial animals. Their main morphological synapomorphy consists of the presence of a type of modified epithelial cell, the cnidocyte, containing a nematocyst that is used in defense as well as for attacking prey.

Detailed explanation-3: -Cnidocytes (“cnidos is Greek for “stinging nettle”), common to species in the diverse phylum Cnidaria, can launch a toxic barb or blob or enable cnidarians to stun prey or deter invaders. Cnidarians are the only animals that have cnidocytes, but lots of animals have neurons, Babonis said.

Detailed explanation-4: -Cnidocytes, also known as stinging cells, are specialized neural cells that typify the phylum Cnidaria (sea anemones, corals, hydroids, and jellyfish) [1, 2, 3]. These cells contain an organelle called cnida or cnidocyst, which is the product of extensive Golgi secretions.

Detailed explanation-5: -Cnidarians, including jellyfish and sea anemones, both detect and capture prey using stinging cells called nematocytes which fire a venom-covered barb via an unknown triggering mechanism.