課程名稱︰植物營養學
課程性質︰農化系必修
課程教師︰鍾仁賜
開課學院：生農學院
開課系所︰農化系
考試日期（年月日）︰2014.06.19
考試時限（分鐘）：10:20~12:10, 110 min
是否需發放獎勵金：是
試題 :
1.Nitrogen is taken up as NO3- by roots and converted into NO2-, and then to
NH4+, and the amide nitrogen of glutamine. What are the enzymatic steps of
this assimilatory process? (10 points)
2.What are presumably the related mechanisms that resulted in the most distinct
zinc deficiency symptoms-"stunted growth" and "little leaf"? (10 points)
3.Why graminaceous and dicotyledonous species differ in the requirement in the
calcium, boron and silicon? (10 points)
4.Descibe the four groups of plant species classified according to the differe-
nces in their growth response to sodium. (10 points)
5.Describe the nutrients that are directly involved in the photosynthesis and
the reactions involved. (20 points)
6.What are the five "classical" classes of phytohormones in higher plants?
(10 points)
7.Photorespiration is generally considered to be a wasteful process that decre-
ases the yield of C3 plants. What is photorespiration? Discuss the meaning
and significance of photorespiration of C3 plants. (10 points)
8.The sinks of solutes (sugar, amino acids, nutrients) delivered in the sieve
elements can be differentiated into (1) utilization sinks an (2) storage sin-
ks in which photosynthates are mainly accumulated. There is competition betw-
een the two sinks for the solutes. Which one is the stronger competitor? Why?
(10 points)
9.Explain the following terms: (10 points)
(1) vegetative storage organs;
(2) proteoid roots;
(3) collection phloem;
(4) the leaf area index (LAI)
(5) depolarization of the membrane potential.