What is a cnidarians stinging cells called?

What is a cnidarians stinging cells called?

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.

Where are the unique stinging structures located in cnidarians?

Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, serving to immobilize prey with toxins contained within the cells.

What are stinging cell animals?

Cnidarians have specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts. These cells are concentrated around the mouth and tentacles of the animal and can immobilize prey with toxins. Nematocysts contain coiled threads that may bear barbs.

Is Medusa motile?

Medusa forms are motile, with the mouth and tentacles hanging down from an umbrella-shaped bell. Cnidarian body forms. Cnidarians have two distinct body plans, the medusa (a) and the polyp (b). The sessile asexual colony has two types of polyps, shown in (Figure).

Are sexes separate in cnidaria?

Cnidarians have separate sexes and have a lifecycle that involves morphologically distinct forms. These animals also show two distinct morphological forms—medusoid and polypoid—at various stages in their lifecycle.

What is called Cnidaria?

Cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans.

What does Cnidaria mean in Latin?

Phylum Cnidaria [Latin cnide, nettle; + Latin -arius, of or related to]

What does platyhelminthes mean in Latin?

Platyhelmintha flatworm