ven2final2007_practice_08 - VEN 2 FINAL EXAM The following...

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VEN 2 FINAL EXAM December 11, 2007 The following True/False questions are each worth one point. Place an A for True and a B for False on your answer sheet. True False 1. ____ ____ Sucrose is the major sugar translocated within the vine but is only a very small fraction of the total soluble sugars found in the berries at harvest. 2. ____ ____ About 10% of the light that strikes a grape leaf blade is transmitted through it. 3. ____ ____ Approximately 50% of the water in the soil at field capacity is available to the plant. 4. ____ ____ During respiration oxygen is consumed (taken up) and carbon dioxide is given off. 5. ____ ____ Any green tissue of the grapevine has the ability to photosynthesize. 6. ____ ____ The tiny wasp that is a very effective egg parasite of the grape leafhopper is also very effective against the variegated leafhopper. 7. ____ ____ Any Thompson Seedless grape that has been grown without the use of chemicals and dried can be called a “natural” raisin. 8. ____ ____ The light reactions of photosynthesis are involved in the conversion of light energy into chemical energy. 9. ____ ____ Layering is a means to replace a missing vine in the vineyard only if the vineyard is planted on its own roots. 10. ____ ____ Carbohydrates will be utilized by the vine during the winter for respiration (temperature permitting - not below 10 o C). 11. ____ ____ A lateral shoot is usually used to form the trunk of the vine. 12. ____ ____ Callus formation at a graft union is a wound response by the vine. 13. ____ ____ Soil pH will influence the availability of mineral nutrients, in the soil profile, to the vine. 1
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Environmental conditions will affect the rate of grapevine leaf photosynthesis. Indicate whether the below listed factors will increase ( A ), decrease ( B ) or have no effect ( C ) on photosynthesis under the following conditions. 14. Increasing wind speed ____ 15. Decreasing light levels from full sunlight to two-thirds of full sunlight ____ 16. Increasing temperature from 10 to 25 o C ____ 17. High ozone concentration ____ 18. Increasing temperature from 40 to 45 o C ____ 19. Which of the below is generally not used to determine when to harvest wine grapes. A. sugar/acid ratio B. pH C. berry size D. titratable acidity E. none of the above 20. At what stage of berry growth will a Flame Seedless grape grower apply gibberellic acid (GA 3 ) in order to increase cell division and therefore increase berry size? A. two weeks before flowering ____ B. at 80% bloom ____ C. at berry set (approximately two weeks after flowering) ____ D. veraison ____ Answer the following questions indicating whether the process increases ( A ) or decreases ( B ). 21. Growth respiration will (increase)/(decrease) as the season progresses. 22.
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This note was uploaded on 09/29/2010 for the course VEN 81437 taught by Professor Larrywilliams during the Fall '10 term at UC Davis.

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ven2final2007_practice_08 - VEN 2 FINAL EXAM The following...

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