parazoa and eumetazoa Flashcards
subkingdom: parazoa
near animals
lack true tissues
no true epidermis
cellular-level organization
most are totipotent
subkingdom: eumetazoa
true animals
with true tissue
symmetrical body
embryos thru gastrula
Domain: eukarya
Kingdom: Animalia
Subkingdom: parazoa
phylum: porifera
sponges
cellular level organization
totipotent cells
8600+ spp.
marine and freshwater
no symmetry
upright and encrusting
adults sessile
choanocyte:
- filter feeding
-flagellum
aka collar cell
what are the classes of sponges?
Homoscleromorpha
calcarea
demospongia
hexatinellida
Homoscleromorpha
amorphic
calcarea
calcispongia
demospongia
bath sponge
spongin
hexactinellida
glass sponge
structures of sponges
asconoid
syconoid
leuconoid
reproduction of sponges
sexual:
monoecious
diecious
asexual:
fragmentation/ regeneration
budding
gemmules
gemmules
dense aggregations of nutrition rich archetypes
osculum
water out
water in
ostium
