A cnidocyte, cnidoblast, or nematocyte is a type of venomous cell unique to the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). The cnidocyte cell provides a means for them to catch prey and defend themselves from predators. A cnidocyte fires a structure that contains the toxin, from a characteristic sub-cellular organelle called a cnidocyst (also known as a cnida or nematocyst). This is responsible for the stings delivered by jellyfish.
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it is a nematocyst
several capsules occur on the body surface. each is produced by special cell called cnidoblast
In a cnidarians, all cells are in contact with their watery environment in which diffusion occurs through the cell membrane.
The epidermis
Cnidarians all have stinging cells called nematocysts with which to catch their prey.
All cnidarians have on their tentacles stinging cells called nematocytes. They have no brains or a central nervous system. Another common feature is that they all can regenerate, letting them produce asexually (without the need for another partner) and to recover from injury.
These are stinging cells found in cnidarian and coelenterate. Each of them bears a stinging cell organelle called nematocyst which is used in offence, defence and attachment of animal.
several capsules occur on the body surface. each is produced by special cell called cnidoblast
A jelly fish. Cnidarian's have a sting cell called a cnidnocyte which is the defining feature.
Cnidarian comes from the Greek/Turkish word "Cnidos" which means stinging nettle
Stinging Cells
In a cnidarians, all cells are in contact with their watery environment in which diffusion occurs through the cell membrane.
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The epidermis
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 word you are looking for is nematocyst.
Coral is nor arthropod , sponge or echinoderm , A coral is a cnidarian also called a coelenterate because it possess cnidocytes , stinging cells , gastrovascular cavity ,tentacles which are cnidarian charters .
cannot capture prey