PHYLUM CTENOPHORA Flashcards
1
Q
What are the similarities shared between Cnidarians and Ctenophores?
A
Biradial symmetry
Diploblastic organization
Possess only a mouth
Gastrovascular cavity with radiating canals
2
Q
How do Ctenophores differ from Cnidarians?
A
Asexual reproduction not well developed
All are hermaphrodite
Very peculiar, highly determined biradial cleavage
Lack cnidocytes
3
Q
What are the distinctive feature of the Ctenophores?
A
Biradial symmetry Ctene rows (8 vertical comb rows formed from paddle-like groups of cilia) Comb cilia (largest in the Metozoa) Colloblast cover their tentacles
4
Q
What are colloblasts?
A
Unique very adhesive cell types, which extend from the deep tentacle sheaths
