EVERYDAY SCIENCE

Detailed explanation-1: -Cnidarians contain specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, and serve to immobilize prey with toxins contained within the cells. Nematocysts contain coiled threads that may bear barbs.

Detailed explanation-2: -Nematocyst is also called the “stinging organ". The toxin is usually a hypnotoxin. This is responsible for the stings delivered by a cnidarian.

Detailed explanation-3: -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.

Detailed explanation-4: -Each cnidocyte contains a large organelle (called a cnida or cnidocyst), which encapsules a coiled thread that is often barbed and associated with toxins. Cnidocytes vary in morphology, and serve specialized functions related to prey capture and defense.

Detailed explanation-5: -The stinging organelles of jellyfish, sea anemones, and other cnidarians, known as nematocysts, are remarkable cellular weapons used for both predation and defense. Nematocysts consist of a pressurized capsule containing a coiled harpoon-like thread.