Report On Phylum Cnidaria... describes many of Cnidarians bodily systems (excretory, digestive etc...)

Cnidaria Report Digestive System: Cnidarians have tentacles, which help them to capture their prey efficiently by making use of paralyzing coiled stingers called nematocysts. These nematocysts are located within the cnidocytes from which their name is derived. The tentacles are then used to draw the cnidarians prey into their mouths. Next, enzymes located within the gastrovacular cavity are used to break up the prey. Certain specialized cells, which line the gastrovacular cavity, then absorb the …

…into the water, where the eggs are fertilized. Asexual coral reproduction occurs through budding, which happens when a parent coral divides unequally. Nervous System: Corals lack a brain but have a simple nervous system called a nerve net. The nerve net extends from the mouth to the tentacles. Also, Polyps can detect certain substances such as sugars and amino acids. This sense, similar to our senses of smell and taste, enables corals to detect prey.