植物生理学模拟试题15.doc

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1、植物生理学期末考试试卷15学号：姓名：成绩：一．判断题（每题0.5分，共10分；答案请用√，×符号表示）1．伤流速度主要取决于木质部与土壤溶液的水势差·························（　　）2．植物维持生命的温度范围比维持生长的温度范围窄·······················(　　)3．玉米植株光合碳同化仅有C4途径····················································（　）4．植物只要有足够的营养物供应，就可以在暗处生长，实际上，光对植物不但没有促进作用，反而有抑制作用····················

2、································()5．抗氰呼吸的P/O比是1·······································································（　　）6．深秋早晨，树木花草叶面上有许多水滴这种现象叫吐水················（　　）7．PEP羧化酶对CO2的亲和力比RuBP羧化酶高································（　　）8．极性不只是表现的整体植物上，一个单细胞照样有极性的存在·····()9．灰分元素是必需元素····················

3、························································（　　）10．植物生长速度随季节气温变化而变化的规律叫温周期现象·············()11．光补偿点升高有利于有机物积累·························································（　　）12．在北半球，夏天日照时间高纬度地区比低纬度地区长······················()13．所有的Chla都是作用中心色素···············································

4、···········（　　）14．短日植物的临界日长一定比长日植物短··············································()15．植物在光下不存在暗反应····································································（　　）16．只要是活的种子,在适宜的条件下都能发芽········································()17．植物呼吸电子传递链中线粒体内的末端氧化酶有细胞色素氧化酶和酚氧化酶···························

5、···················································································(　　)18．旺盛生长的三年生桃树没有发生衰老过程···········································()19．当植物没有液泡时，植物Ψs消失，Ψp＝0，此时的Ψw＝Ψm，植物Ψm≈0，因此Ψw＝Ψm≈0····················································································(　　)20．细胞伸

6、长生长实质上就是细胞吸水的过程···········································(　　)二．单项选择题（10分）1．C4植物维管束鞘细胞叶绿体中，CO2最先被固定为······························（）A、草酰乙酸B、苹果酸C、谷氨酸D、磷酸甘油酸2．属于生理酸性盐的是···················································································（）A、NH4NO3B、NH4ClC、KNO3D、Ca(NO3)23．对植物生长最有利的是··

7、··········································································（）A、26℃恒温B、35℃恒温C、白天26℃夜里15℃D、白天15℃夜里26℃4．不利于植物越冬的是·················································································（）A、较多的可溶糖B、较高的水分C