Cnidarians Flashcards
cnidarians
Cnidaria what type of symmetry
radial/biradial (hints towards bilateral)
Cnidaria what kind of cell structure
diploblastic
Cnidaria what kind of ceolom
acoelomate
Cnidaria what kind of nervous system
Nerve net
Cnidaria 2 stages
medusa (sexual) and polyp (asexual budding)
Cnidaria defense/prey capture with what
cnidocytes
Cnidaria what type of skeleton
Hydrostatic
Cnidaria 4 classes
Hydrozoa, scyphozoa, cubozoa, anthozoa
Class hydrozoa stinging cells and gametes
Stinging cells on outside layer, gametes produced by outer layer
Class scyphozoa which stage dominant
Medusa
Class scyphozoa mono or diecious, gametes
diecious, gametes formed by inner gastrodermal cells
Class Anthozoa which stage
Only polyp stage
Class Anthozoa gastro cavity divided by what
mesenteries
Class anthozoa asexual reproduction
Pedal laceration
Swimming form of cnidaria
Planula stage
Phylum Ctenophora cell structure
diploblastic
Ctenophora symmetry
biradial
Ctenophora anus or nah
anus
Ctenophora nervous system
nerve net
Ctenophora get prey how
colloblasts excreting glue like structure
Ctenophora what type of fertilization
external, monoecious
Phylum placozoa symmetry
Asymmetrical
Special things about placozoa
flagellated dorsal epithelium, ciliated ventral epithelium, middle mesenchyme like sheet
Phylum acoelomorpha cell structure and coelom
Triploblastic and acoelomate
Acoelomorpha asexual
budding
internal or external fertilization acoelomorpha
internal by monoecious pairs
Acoelomorpha gut
incomplete