Important Terms
epidermis: outer layer of the body wall
gastrodermis: inner layer of cells that line the gastrovascular cavity
mesoglea: a gel-like matrix between the epidermis & gastrodermis of cnidarians
cnidocytes: produce cnida
cnida: an organelle characteristic of the cnidaria that is used in defense, food gathering, and attachment
polyp: the attached, sessile stage in the cnidarian life cycle
medusa: the free-swimming stage of the cnidarian life cycle
nematocyst: type of cnida whose stinging cells contain venom that is injected into prey
gastrovascular cavity: the large central cavity of cnidarian and flatworms that receives and digests food. ___it has a single opening serving as the mouth and anus
hydrostatic skeleton: the skeletal system that consists of fluids that are held under pressure in a closed ___body compartment
planula: a cilliated, free-swimming larva
statocyst: sense organs of equilibrium used to sense direction of gravity
gonozooid: reproductive polyp that produces medusa by budding
pedal disk: the surface opposite to the mouth, which senes to attach the anemone to the substrate, or ___hard surface, upon which it lives
protandry: the condition in a monocious organism where male gonads mature before female gamates
gastrodermis: inner layer of cells that line the gastrovascular cavity
mesoglea: a gel-like matrix between the epidermis & gastrodermis of cnidarians
cnidocytes: produce cnida
cnida: an organelle characteristic of the cnidaria that is used in defense, food gathering, and attachment
polyp: the attached, sessile stage in the cnidarian life cycle
medusa: the free-swimming stage of the cnidarian life cycle
nematocyst: type of cnida whose stinging cells contain venom that is injected into prey
gastrovascular cavity: the large central cavity of cnidarian and flatworms that receives and digests food. ___it has a single opening serving as the mouth and anus
hydrostatic skeleton: the skeletal system that consists of fluids that are held under pressure in a closed ___body compartment
planula: a cilliated, free-swimming larva
statocyst: sense organs of equilibrium used to sense direction of gravity
gonozooid: reproductive polyp that produces medusa by budding
pedal disk: the surface opposite to the mouth, which senes to attach the anemone to the substrate, or ___hard surface, upon which it lives
protandry: the condition in a monocious organism where male gonads mature before female gamates