植物学高手拜托你们帮我看看 (答案不确定) 以下是94年 2.Molecular chaperones(陪伴;护送) function by: a.catalyzing the hydrolysis of peptide bonds. b.catalyzing the dehydration synthesis of a protein. c.facilitating protein folding(摺叠). d.denaturing(改变性质) proteins. 11.The heterocysts(异型细胞) of cyanobacteria are most closely associated with: a.sporulation b.nitrogen fixation. c.photosynthesis d.gliding(滑动) movements. 16.A major difference between the spore walls of bryophytes and charophytes (轮藻) is that the bryophyte spore walls contain: a.lignin b.sporopollenin(孢粉质) c.cellulose d.phenolic(酚) material. 22.In gymnosperms,_______ produce nonmotile sperm. a.Conifers and gnetophytes(麻黄) b.Conifers and cycads(苏铁;凤尾蕉类) c.Cycads(苏铁) and Ginkgo(银杏) d.Cycads and gnetophytes 这题老师跟我说是 a.但是苏铁和银杏的精子就会移动吗? 26.The presence of Casparian strips forces substances entering and leaving the vascular cylinder to pass through the protoplasts of______ cells. a.endodermal b.epidermal c.pericycle d.xylem 原本我写a.老师说对,後来我又觉得c.比较对耶~到底是哪一个呀? 27.In the shoot(幼芽) apex, the proocambium originates from the: a.pith meristem. b.peripheral meristem. c.intercalary meristem. d.ground meristem. 原形成层不是从根或茎的原生分生组织(promeristem)来的吗? 原生分生组织产生->原皮组织(Protoderm),基本分生组织(Ground meristem) ,原始形成层(Procambium) 怎麽感觉没有答案勒?? 28.Anticlinal divisions(径向分裂) are different from periclinal divisions(周向 分裂) in that an anticlinal division: a.occur in relatively large cells. 大细胞是什麽? b.occur solely in the corpus(主体) of the apical meristem. c.increase the number of cell layers. d.are perpendicular(垂直) to the surface.这个错吧,与表皮垂直的是周向分裂 a.b.c.不太确定 29.Which layer(s) of the peripheral zone of the shoot apical meristem give(s) rise to leaf primordia(原基)? a.L1 only b.L2 only c.L3 only d.L1.L2,and L3 L1L2L3是什麽? 30.Angiosperm wood differs from conifer wood in that angiosperm wood has: a.tracheids.不对,管胞被子裸子都有 b.vessels裸子没有导管 c.small rays. d.oderly radial files of cells. 这题答案是b. 我想问small rays是什麽? oderly radial files是什麽? 快问完了,真的~ 92年的 4.Which of the following would not contribute to water uptake by a plant cell ? A) an increase in the water potential(Ψ) of the surrounding solution B) a decrease in pressure on the cell exerted by the wall C) the uptake of solute by the cell D) a decrease in Ψ of the cytoplasma E) increase in tension on the surrounding solution 6.A plant that is self-incompatible has a genotype of S5S9 for the S-locus. It receives pollen from a plant that is S3S9.Which of the following is most likely to occur? A) all of the pollen will germinate, forming pollen tubes B) about half of the pollen will germinate C) none of the pollen will germinate D) fertilization will occur in about half of the flowers of the pollinated plants E) pollen from the S3S9 plant will secrete ribonuclease that destroys epidermal cells of the S5S9 stigma. 最後一个91年的 25.Under a microscope a piece of a piece of a mushroom(蕈) would look like A, jelly B, a tangle of string C,grains of sugar or salts D, a piece of glass E,foam(泡泡) 不好意思,问题有点多,谢谢唷~~ --

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