Cnidaria Flashcards
1
Q
Defining characteristics of Cnidaria.
A
a. Presence of tissues
b. diploblastic
c. no bilateral symmetry
2
Q
4 Major Cnidarians.
A
Hydrozoans
Sea Anemones
Jellyfish
Corals
3
Q
Reproduction strategies.
A
Sexual and asexual.
- Larval stage can last for a long time and travel far distances.
- release of egg-sperm clusters from polyp
- transport to surface, break up, mixing and fertilization
- larval stage
- settlement and polyp formation, increasing calcification
- budding and expansion
4
Q
Which Class do Anemones and Corals belong to?
A
Class Anthozoa.
5
Q
Characteristics of Anthozoa
A
- Often Stenotypic
- Sessile or sedentary.
- Often have algal symbionts
- Major reef builders
- living individual is a polyp
6
Q
Colonial forms in increasing integration.
A
a. Phaceloid
b. Centroid
c. Asteroid
d. Meandroid
7
Q
What do reefs require?
A
a. Photic zone
b. low turbidity
c. warm water
d. good circulation
