Sponges Flashcards
1
Q
radiate
A
tissue level organization
2
Q
porifera
A
pore bearing
3
Q
sponges characteristics
A
- asymmetrical
- no germ layers (gut)
- embryonic motile stage only
4
Q
3 classes of sponges
A
- calcarea
- hexactinellida
- demospongiae (most common)
5
Q
asconoid
A
- simplest body form
- choanocytes line the sponge seal
6
Q
syconoid
A
- tubular body form
- wall fold to increase surface
- choanocytes line the canals within the body wall
7
Q
leuconoid
A
- most complex body form
- more than one exit
- choanocytes line the distinct chambers
8
Q
body forms
A
not an evolutionary series
