Tutorial: basal animals Flashcards
1
Q
sponges have ____ tissue type
A
LACK true tissues
2
Q
Cnidaria have ____ tissue type
A
2 (Diploblastic)
3
Q
Porifera have ____ symmetry
A
asymmetrical
4
Q
do Porifera have a body cavity
A
NO
5
Q
what kind of development do Porifera have
A
ABSENT
6
Q
do Porifera have segmentation
A
no
7
Q
do Porifera have cephalization
A
NO
8
Q
describe the digestive system of Porifera
A
- No gut = they are suspension feeders
9
Q
describe the excretory system of Porifera
A
diffusion
10
Q
describe the circulatory system of Porifera
A
Absent or by Diffusion
11
Q
describe reproduction in Porifera
A
hermaphroditic
12
Q
describe the nervous system in Porifera
A
absent
13
Q
other key traits of Porifera
A
- have choanocytes (collar cells flagellated cells that ingest bacteria and
tiny food particles)
14
Q
are there taxa in Porifera
A
NO
15
Q
symmetry in Cnidaria
A
primarily radial
