課程名稱︰植物營養學 課程性質︰農化系必修 課程教師︰張必輝 開課學院：生農學院 開課系所︰農業化學系 考試日期（年月日）︰2015.06.25 考試時限（分鐘）：110分鐘 試題 : Final examination of plant nutrition 1. Explain the following terms:(20 points) (1) proteoid root; (2) leaf area index; (3) lime induced chlorosis; (4) putrescine; (5) phytosiderphores; (6) beneficial elements; (7) the first and the second sink; (8) second messenger; (9) transfer cell; (10) indeterminate nodule. _ _ 2. Nitrogen is taken up as NO3 by roots and converted first into NO2 , and + then to NH4 , and the amide nitrogen of glutamine. What are the main enzymatic steps of this assimilatory process? (10 points) 3. Describe the pathway of sulfate assimilation and reduction in choroplasts. (10 points) 4. What is the mechanism of osmotic regulation in guard cells? (10 points) 5. What are prexumably the related mechanisms that resulted in the most distinct zinc deficiency symptoms - "stunted growth" and "little leaf"? (10 points) 6. Describe the four groups of plant species classified according to the differences in their growth response to sodium. (10 points) 7. What is meant by the term "soil-plant barrier"? What is the meaning of the "soil-plant barrier"? (10 points) 8. What are the differences in nutrution and cell wall structure between "calcicoles" and "calcifuges"? 9. What are the beneficial effects of silicon in plants?(10 points) Bonus 10 points (optional) When you are up to help with diagnosis of mineral deficiency: (1) What is mineral deficiency? Provide "one" specific element for example in order to sort out the following situation. (2) How do you recognize this mineral deficiency? (3) What are the tests and/or informaion you may need to support your diagnosis? (4) How will you take an action to fix this mineral deficiency? (5) How would the grower benefit from your treatment? --

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