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Tentacles touch a source of food.
cnidocil ... opeerculum,,, for those Plato users
Nematocysts are located within a capsule in the cell. The capsule has a lid that opens when the nematocyst is discharged.
Tsunamis are triggered by earthquakes due to vibrations.
Because some people get aroused easily and there nipples become hard and they feel sexy
nematocyst
Nematocyst discharge is triggered by an immediate approach or a foreign stimulus. When the cell is discharged, a brand new nematocyst is created as the system in each cell can only be activated once.
Nematocyst discharge is triggered by an immediate approach or a foreign stimulus. When the cell is discharged, a brand new nematocyst is created as the system in each cell can only be activated once.
Tentacles touch a source of food.
cnidocil ... opeerculum,,, for those Plato users
All Cnidarians have nematocysts as a specialized organelle. Cnidarians use their nematocysts to capture prey and as a defense mechanism against predators.
prey capture
If you mean Nematocyst, a structure such as jellyfish
venom
We giggle in response to something funny, amusing, or lighthearted. It is often triggered by surprise, incongruity, or absurdity, and it serves as a social bonding mechanism that helps us connect with others. Laughing can also be a way to release tension or stress.
nematocyst
By corallite and nematocyst .