What is the name of the cells that produce nematocysts in cnidarians?

The cells responsible for producing nematocysts in cnidarians are called cnidoblasts. These specialized cells are essential for the unique feeding and defensive mechanisms of cnidarians, such as jellyfish, sea anemones, and corals. Nematocysts are a type of stinging organelle contained within the cnidoblasts, and when triggered, they can deliver toxins to prey or potential threats.

Gemmules refer to a form of asexual reproductive structure found in some sponges, while scolex is the head of a tapeworm responsible for attachment to the host. Flame cells are excretory cells found in flatworms, involved in osmoregulation. None of these alternatives have the specific function associated with producing nematocysts, which is why cnidoblasts is the correct answer.