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Related Flashcards
Cards In This Set
| Front | Back |
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Average salinity of the world ocean is about
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35%
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The principle of constant proportions states that...
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That the ratio of major salts in samples of seawater from various places is a constant
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A physical or biological necessity whose presence in inappropriate amounts limits the normal action of an organism is called a
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Limiting factor
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T/F Evolution and extinction operate hand-in-hand to shape marine ecosystems through time
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True
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The zone of lighted ocean in which marine autotrophs tap more energy than they use to stay alive is called the
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Euphotic zone
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The organisms that produce food are called
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Primary producers
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The main inorganic nutrients necessary for the success of marine autotrophs are ...
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Nitrates and phosphates
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Why does the primary production in temperate regions change seasonally?
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The amount of sunlight and wave energy change
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The organism that consume autotrophs are called
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Heterotrophs
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T/F
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Primary productivity is markedly higher in warm coastal waters than cool temperate waters
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Inverebrates evolved ...
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After the last of the snowball glaciations
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Protozoa are
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Both planktic andbenthic
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T/F Cnidaria have a central nervous system
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F
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Which is correct?
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Gastropod = Snail
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T/F Enchinoderms possess a vascular system that pumps blood
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False
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