Bio Voci 10, 11, 12 (EN)
Bio Voci
Bio Voci
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Cnidaria
Animal Phylum consisting of organisms that have radial symmetry, a gastrovascular cavity and cnydocytes.
cnidocyte
Stinging cell of cnidarians
nematocyst
Stinging capsule
Gastrocascular cavity
A central digestive compartment with one opening as an anus and mouth.
Radial Symmetry
A basic body plan where the organism can be devided into similar halves by passing a plane at any angle along a central axis.
polyp
Sessile, cylindrical form of Cnidaria.
meduasa
floating, disc shaped form of cnydaria
tentacle
A long thin soft organ near the mouth of the organism
gastrodermis
outer cell layer
epidermis
inner cell layer
External stimulus
A detectable change in the environnement causing a response
protista or protoctistans
kingdom that comprises unicellular organisms organisms made of cells which have an obvious nucleous
light detector
light sensitive spot
eye spot
reg pigmented spot that shields the light detector from light coming from a certain direction
longitudinal
placed or running lenghtwise
to emerge
to appear or come out of something
oral groove
long deep cut in the surface of the protists (mouth)
food vacuole
organelle that forms by enclosing food particles with the cell membrane
contractile vacuole
organelle that rythmically pumps fluid out of the cell
cell colony
a group of uniform cells fused together
differentiation
structural or functional specialization
strand
a single piece of hair or string
motion
movement or way of moving
to burst
to break open suddenly or violently, often because there is too much preassure inside
