Marine final study guide

Marine final study guide - EXAM 1 QUESTIONS The three major...

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EXAM 1 QUESTIONS The three major branches on the General Phylogenetic Tree are Eukarya, Bacteria, and _______. o Archea Almost ___% of marine species went extinct during the K-T Mass Extinction Event 64 million years ago. o 11 ________ prevents taxa from evolving locally and spreading into other regions. o Isolation Most harmful species of phytoplankton are __________. o Dinoflagellates Island size and ____are important determinants of species richness. o Isolation The removal of a ______ has major impacts on ecosystem function. o Keystone species Species which are morphologically identical but genetically different are said to be ______ species. o Cryptic Species richness _________ with a decrease in the area of an island. o Decreases Most of the known marines species are ____. o Benthic The intensity of intertidal zonation of fauna ________ with decreasing latitude. o Increases Marine species constitute nearly _____% of the known species on Earth. o 14 Sea level has been much ________ for the last 250,000 years. o Lower The depth at which integrated daily production is equal to the daily integrated respiration is the ___________. o Critical ______ light is attenuated more quickly than ________ light in estuarine and nearshore coastal waters. o Blue, red ‘Barrel filling’ of empty niches usually follows major ______ events. o Extinction Refer to the plot on the right. Which curve has a lower diffuse attenuation coefficient (k d ) value? o Curve 2 Organic compounds that are not readily decomposed by bacterial activity are said to be __________. o Refractory The more distantly related the two competitors, the more ____ the outcome of competition will be. o Uneven Plankton ranging in size from 2-20 µm in length are termed _______.
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o Nanoplankton Photosynthetic bacteria use _____ as the electron acceptor for one type of anoxygenic photosynthesis. o H 2 S Heterocysts are specialized structures used by _______ to protect nitrogenase from exposure to oxygen. o Cyanobacteria A reaction center combined with the accessory photosynthetic pigments comprises a ________. o Photosynthetic unit At low latitudes, diversity is maintained by ________ and at higher latitudes, diversity is maintained by disturbance. o Biotic interactions The compensation depth is the depth at which the ______ equals the rate of photosynthesis. o Respiration rate Animals with short-lived planktonic larvae have ______ rates of endemism that those with wide dispersal. o Higher ________ prevents taxa from evolving locally and spreading into other regions. o Isolation A plant or animal species that is restricted to one or a few localities in its distribution is said to be ______. o
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This note was uploaded on 02/18/2012 for the course MSCI 575 taught by Professor Ms.pinckney during the Spring '11 term at South Carolina.

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Marine final study guide - EXAM 1 QUESTIONS The three major...

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