OCE 3014L Lecture Notes - Lecture 2: Meiobenthos, Intertidal Zone, Main Source
25 Jul 2018
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Which of the following statements about benthic life is FALSE?
Benthic life includes organisms that live suspended within the water column.
Life on rocky shores of the supratidal (spray) zone is influenced primarily by _____________.
the ability of an organism to avoid drying out
Mussel beds are commonly found in the _________ subzone of the intertidal zone.
middle tide
Based on how a sea anemone feeds, what should you avoid doing to a sea anemone so that it won't hurt
you?
put your tongue into one
All of the following are adaptations that organisms in rocky intertidal zones use to avoid predators
EXCEPT _____________.
release of large numbers of eggs/sperm into the water during reproduction cycles
Which of the following statements about meiofauna is FALSE?
Meiofauna are found only in the supratidal (spray) zone
Generally, kelp that forms kelp forests is attached to _____________.
the rocky bottom in the subtidal zone
All of the following statements about kelp forests are true, EXCEPT:
Kelp is the main source of food for most whales.
The term sessile describes organisms that have the ability to swim.
False
There is less species diversity in sediment-covered shores than in rocky shores, but the number of
individuals may be similar.
True
Hypersaline, hydrocarbon, and subduction-zone seep biocommunities all derive their energy from
microbial oxidation of hydrogen sulfide or methane.
True
Coral reefs need all of the following conditions EXCEPT _____________.
abundance of turbidity
What causes the potentially lethal bleaching of coral reefs?
expulsion of algae
The environmental factor that is most consistently associated with coral bleaching episodes involves
_____________.
high sea surface temperatures
The pressure in deep-ocean trenches is typically ________ times that at the ocean's surface.
1000
On the deep-ocean floor, studies suggest that organisms the size of humans would have their soft tissue
devoured in about _____________.
24 hours
During which year were deep-sea hydrothermal vent biocommunities first discovered on the ocean
floor?
1977
Adaptations of deep-sea hydrothermal vent biocommunities (such as high metabolic rates and rapid
reproduction) exist because _____________.
Document Summary
Benthic life includes organisms that live suspended within the water column. Life on rocky shores of the supratidal (spray) zone is influenced primarily by _____________. the ability of an organism to avoid drying out. Mussel beds are commonly found in the _________ subzone of the intertidal zone. middle tide. Based on how a sea anemone feeds, what should you avoid doing to a sea anemone so that it won"t hurt you? put your tongue into one. All of the following are adaptations that organisms in rocky intertidal zones use to avoid predators. Except _____________. release of large numbers of eggs/sperm into the water during reproduction cycles. Meiofauna are found only in the supratidal (spray) zone. Generally, kelp that forms kelp forests is attached to _____________. the rocky bottom in the subtidal zone. All of the following statements about kelp forests are true, except: Kelp is the main source of food for most whales.
