Marine Bio Corals Quiz
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19 terms
Terms | Definitions |
|---|---|
 Corals reproduce asexually by | budding, making clones |
| corals reproduce sexually by | spawning |
| corals bud in order to | make colonies bigger |
| corals spawn in order to | make new colonies |
| 2 types of coral | hermatypic, ahermatypic |
| hermatypic coral | reef building coral, hard skeleton, zooxanthellae, tentacles in the 6's |
| ahermatypic coral | non-reef building coral, flexible internal skeleton, no zooxanthellae, tentacles in the 8's |
| necessary for reef growth | shallow water, clear water, sunlight, sandy sediments, moderate salinity, warm water |
| zooxanthellae and corals have a ____ relationship | mutualistic, symbiotic |
| zooxanthellae get ___ out of the relationship | habitat, waste products from coral like CO2 and nitrogen |
| corals get ___ out of the relationship | glucose, O2 from photosynthesis of zooxanthellae |
| zooxanthellae | dinoflagellates (single celled algae) that have a symbiotic relationship with coral |
| coral bleaching | when stress causes coral to expel their zooxanthellae |
| human threats to coral | pollution, power plants, destructive fishing, boats, deforestation |
| natural threats to coral | natural disasters, water temp changes, water salinity changes, predators like nudibranchs or crown of thorn sea stars, ocean acidification |
| how is pollution bad for coral | sediments block light from zooxanthellae, chemicals kill the coral or cause overgrowth of algae |
| how is deforestation bad for coral | buring trees emits CO2 (ocean acidification), erosion clouds water |
| How does reef sediment contribute to reef growth? | sediment is compacted and used to add to corals skeleton |
| 3 ways corals get nutrition | photosynthesis, capture zooplankton and detritus, absorb nutrients dissolved in water |
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