other deuterostomes Flashcards
1
Q
what is a lophophore?
A
a ring of tentacles surrounding a mouth (circumoral) which is characteristic of Bryozoa
2
Q
what are the functions of the lophophore?
A
food collecting
gas exchange
(bryozoa)
3
Q
what type of reproduction do bryozoa have?
A
asexual by budding or fission. Gametes released thru tentacles.
4
Q
what type of animals are representative of Hemichordata?
A
tongue worms or acorn worms
5
Q
what are the three subphyla of chordata?
A
Urochordata
Cephalochordata
Vertebrata
6
Q
defining characteristics of Chordata
A
- dorsal hollow nerve cord
- notochord
- pharyngeal slits
- post-anal tail
7
Q
Urochordata = gr?
A
tail string
8
Q
what are the tree classes of tunicates?
A
- ascidia
- larvacea
- thaliacea
9
Q
how do tunicates feed?
A
through straining particles, some carnivores
10
Q
describe ascidians
A
- sea squirts
- 90% of all described urochordates
- throughout the world
- live attached to solid surfaces
- adults sessile
- protein and polysaccharide tunic
- solitary or colonial
11
Q
how do tunicates get water in?
A
via a buccal siphon
12
Q
do tunicates have a heart?
A
yes
