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Coral reefs
Wildlife Ecology - Coral reefs
29
Biology
Undergraduate 2
04/13/2017

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Cards

Term
What benefits do cnidarians have from their symbiotic relationship with Zooxanthellae in tropical coral reefs?
Definition
-Sustain coral metabolism
-Growth
-reproduction
-Survival
-Nutrient recycling
Term
What benefits do Zooxanthellae have from their symbiotic relationship with cnidarians in tropical coral reefs?
Definition
- Access to waste products
- A stable position in the water column for accessing downwellings of light
- increased protection from grazers
Term
What is the name of reef building corals?
Definition
hermatypic corals
Term
What is the name of none reef building corals
Definition
ahermatypic
Term
What do Hermatypic corals contain which ahermatypic corals do not?
Definition
Zooxanthellae
Term
Where do you find hermatypic corals?
Definition
Warm, shallow, clear water
Term
Where do you find ahermatypic corals
Definition
They occur in cold, deep waters
Term
Name 2 characteristics of massive hermatypic corals?
Definition
mound shape, slow growing
Term
Name 3 characteristics of branching hermatypic corals?
Definition
tree, elkhorn, rapid growth
Term
how many g of C do corals reefs fix per meter squared per year
Definition
2500
Term
What does the word Anthozoa mean
Definition
Flowering plant
Term
What Order do the hard corals belong to?
Definition
Scleractnia (Hexacoralian)
Term
What are the Biogenic features of Scleractnia (Hexacoralian)
Definition
o Constructional
o Wave resistant
Term
What are the name of the two body forms belonging to Cnidaria?
Definition
Polyp

Medusa
Term
Are coral reefs heterotrophic or autotrophic systems?
Definition
Heterotrophic
Term
Are coral polyps heterotrophs or autotrophs
Definition
heterotrophs
Term
Do corals reproduce sexually or asexually
Definition
Both
Term
What might the Coral break to form a new clone colony
Definition
coenosarc
Term
Name a fast-growing coral species that maintains it's genotype when cloned?
Definition
Acropora cervicornis
Term
What does gonochorism mean?
Definition
One of at least two sexes
Term
What percentage of corals are hermaphrodites?
Definition
25%
Term
What is a broadcaster?
Definition
Corals that spawn millions of ganetes into water for external fertilisation
Term
Name two broadcaster corals
Definition
acroporidae, pociloporidae
Term
What are brooders?
Definition
corals that have eggs that remain in gastrovascular cavities and fertilised by motile sperm. Well developed larvae released for nearby settlement. Typical in those with small polyps
Term
Name a coral that is a brooder
Definition
agaricidiaea
Term
What are some of the triggers of mass spawning
Definition
day length, water temp, lunar cycle
Term
Benefits of mass spawning
Definition
overwhelms predators
Term
what is the name of the ciliated larvae that corals produce?
Definition
o Planulae
Term
What is the name of the digestive filaments that a polyp will extrude when threatened
Definition
mesenterial
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