Cnidarian

• Cubozoa- possess complex eyes allowing for advanced visual capabilities
• Scyphozoa- medusae have a bell shaped body with tentacles hanging down from the edge
• Scyphozoa- lack a velum ( a membranous structure found in hyrozoan Medusae
• Anthozoa- lack a Medusa stage; exists only as polyps
• Anthozoa- polyps are typically sessile and solitary or colonial with tentacles surrounding a central mou
• Hydrozoa- typically exhibit both polyp and medusa form in their life cycle
• Hydrozoa- medusae have a bell shaped body with tentacles around the edge
• Cnidocytes are modified nematocysts that secrete sticky threads called mucus to trap prey.
• Nematocysts are used by cnidarians to capture food, defend against predators, and reproduce sexually.
• Hydraulic system is used to move water through the body cavity, which can be used to expel prey or toxins.
• Most cnidarians reproduce sexually through gametes produced by gonads.
• Gastrovascular cavity is a single chambered digestive tract where food is ingested, digested, absorbed, and excreted.
• Asexual reproduction occurs when polyps bud off new individuals from their bodies.
• Jellyfish use their stingers to capture prey and defend themselves from predators.
• Jellyfish have no brain but they do possess sensory organs such as eyespots and statocysts (balance organ).
• Jellyfish have a bell-shaped body with tentacles around the edge.
• Cnidaria includes jellyfish, coral, sea anemones, hydras, and other related organisms.
• Cnidocytes are specialized cells that produce nematocysts, which are hollow tubes filled with venomous fluid.
• Nematocysts are discharged when triggered, injecting their contents into prey or potential threats.
• Asexual reproduction occurs when coral fragments break off and form new colonies.
• Cnidocytes are specialized cells found on tentacles that contain nematocysts, which are hollow tubes filled with venomous fluid.
• Nerve net- it allows for basic sensory perception and coordination of movement
• Cnidocytes- specialized cells containing stinging structures called nematocyst
• Cnidocytes- are located on the tentacles and body surface and are used for defense and capturing prey
• Mouth/oral opening- a central digestive with a single opening that functions as both mouth and an anus
• mouth/oral opening- it serves as both entrance for food and the exit for waste
• Tentacles- arm like structure surrounding the mouth of cnidarians
• Tentacles- are equipped with cnidocytes and are used to capture prey and defend against predators