Prelim_2_MM_changes_Ver_B_Answers - EAS/BIOEE 154 Prelim 2...

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1 EAS/BIOEE 154 Prelim 2 VERSION: B Fall 2007 1. Which Prelim VERSION are you taking? a. A b. B 2. Net Primary Production (NPP) is: a. the difference between the amount of CO 2 consumed by photosynthesis and the amount of CO 2 produced by respiration b. the net accumulation of carbon within the phytoplankton cell c. both a and b 3. The compensation light level refers to the light level where a. photosynthesis equals respiration b. photosynthesis is less than respiration c. photosynthesis exceeds respiration d. None of the above 4. When phytoplankton are growing in the light limited range of light intensity, they have a negative net primary production. a. True b. False 5. Phytoplankton are photoinhibited when a. they have previously been growing, for an extended period of time, under repressive conditions b. they exhibit negative phototaxis c. light levels are close to full sunlight d. none of the above 6. The depth at which phytoplankton cells exhibit zero net primary production is called the a. critical depth b. compensation depth c. mixing depth d. none of the above 7. Nitrogen, phosphorous, and silica concentrations are generally a. About the same throughout the water column b. Low in surface layer of the ocean and high at depth c. High in surface layer of the ocean and low at depth
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2 8. The main source of iron input to the surface ocean layer is from a. dust blowing off of continents b. vertical mixing of cold deep ocean water c. horizontal Ekman transport d. none of the above 9. Subtropical Gyres have low levels of primary production per square meter because a. The subtropical gyres receive little river input b. There is a persistent lens of warm low-nutrient surface water that depresses the thermocline and associated nutricline c. Trade winds are too weak to vertically mix large amounts of nutrients to the surface 10. Primary production along most of the equator is high because the trade winds cause: a. deep (down to 500 meters) vertical mixing that brings nutrient rich water to the surface b. surface layer convergence and the downwelling of warm nutrient poor water c. surface layer divergence and the upwelling of deep nutrient rich water d. zonal (westward) advection of nutrient rich water from the coastal region 11. Primary production along coastal areas is high because: a. Winds are most intense along continental boundaries and this causes strong vertical mixing, bringing deep nutrient rich water to the surface b. Onshore winds drive surface layer phytoplankton close to shore where they become highly concentrated c. Tidal mixing is enhanced over shallow continental shelf regions 12. Which is true about the Critical Depth? a.
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This note was uploaded on 09/28/2008 for the course EAS 1540 taught by Professor Monger during the Fall '07 term at Cornell University (Engineering School).

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Prelim_2_MM_changes_Ver_B_Answers - EAS/BIOEE 154 Prelim 2...

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