AP BIOLOGY

Detailed explanation-1: -Because the tentacles of corals, jellyfish, and sea anemones have this radial structure, they can sting and capture food coming from any direction. Many cnidarians take two main structural forms during their life cycles, a polyp form and a medusa form.

Detailed explanation-2: -Jellyfishes, sea anemones, and corals are cnidarians, invertebrates that have stinging cells and take food into a central body cavity. Cnidarians use stinging cells to capture food and defend themselves. There are two cnidarian body plans, polyp and medusa.

Detailed explanation-3: -Jellyfish, hydras, sea anemones, and corals make up the four classes of cnidarians. All cnidarians have tentacles around their mouths. Each tentacle is covered with sting cells, and each sting cell has a highly sensitive trigger.

Detailed explanation-4: -Cnidocytes (“cnidos is Greek for “stinging nettle”), common to species in the diverse phylum Cnidaria, can launch a toxic barb or blob or enable cnidarians to stun prey or deter invaders. Cnidarians are the only animals that have cnidocytes, but lots of animals have neurons, Babonis said.

Detailed explanation-5: -Cnidarians are invertebrates such as jellyfish and corals. They belong to the phylum Cnidaria. All cnidarians are aquatic. Most of them live in the ocean.