AP BIOLOGY

Detailed explanation-1: -Coelenterates carry specialized living stinging cells called cnidocytes that encapsulate intracytoplasmic stinging organelles called cnidae, which include nematocysts. Mild envenomation, typically inflicted by fire coral, hydroids, and anemones, produces skin irritation.

Detailed explanation-2: -All Cnidarians have tentacles with stinging cells in their tips which are used to capture and subdue prey. In fact, the phylum name “Cnidarian” literally means “stinging creature.” The stinging cells are called cnidocytes and contain a structure called a nematocyst. The nematocyst is a coiled thread-like stinger.

Detailed explanation-3: -All coelenterates are aquatic, mostly marine, animals. The body form is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.

Detailed explanation-4: -Coelenterates use tentacles to capture the food and draw it into the opening.

Detailed explanation-5: -Cnidoblasts or stinging cells are a characteristic feature of organisms belonging to the phylum Coelenterata.