课程名称︰植物营养学
课程性质︰农化系必修
课程教师︰张必辉
开课学院：生农学院
开课系所︰农业化学系
考试日期（年月日）︰2015.06.25
考试时限（分钟）：110分钟
试题 :
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?