Phylum Ctenophora Flashcards
1
Q
How many cell layers do Ctenophores have?
A
2, ectodermis and gastrodermis (separated by mesoglea)
2
Q
Symmetry?
A
Bi-radial (2 tentacles)
3
Q
Habitat?
A
Marine, surface waters
4
Q
How many tentacles?
A
2 (can regrow), However may be absent in some species
5
Q
Locomotion?
A
8 rows of cilia (Comb rows), free swimming
6
Q
Nervous system?
A
No, but do have a Nerve Net
7
Q
What are Colloblasts?
A
Specialized adhesive cells for prey capture (similar to prey capture)
8
Q
Have nematocysts?
A
No, only colloblasts
9
Q
Ctenophore invasions. Describe.
A
An introduced Ctenophore devastated fishery in the Black Sea. Mitigated by introduction of another Ctenophore that ate the invasive Ctenophore
