Реферат: Plant Hormone Essay Research Paper ITitlePLANT HORMONE
Название: Plant Hormone Essay Research Paper ITitlePLANT HORMONE Раздел: Топики по английскому языку Тип: реферат |
Plant Hormone Essay, Research Paper I.Title:PLANT HORMONE #5 II.Introduction As humans need hormones to develop or function some organs plants need hormones to growth and develop. There are more than 40 hormones which are also called GIBBERELLINGS. III.Materials Needed 1) Dwarf pea seedlings 2) Normal pea seeding 3) H2O 4) seeds:corn,sun flower, pea, 5) IAA 6) 0.1 mg/L, 10mg/L,100mg/L IV.Summarize The experiment will show us and also help us to understand the effect of hormones in plants. V.Observations. A. The function growth rate of plants 1) Measure the plants of the dwarf and normal box (see diagram 1) then add to both boxes of plants water,0.1mg/L,10mg/L,100mg/L by rows. After a week measure the plants (see diagram 2). Then take a difference and respond to the two question. a) What?s difference reaction of plant to different kinds of concentration of hormone? ________________________________________________ ________________________________________________ b)What?s the different reaction of different type of plants, meaning Dwarf to Normal plants? __________________________________________________ __________________________________________________ B. Seed Germination Select three of the plants from the growth put one in the bottom, other in the media, and the last in the top (see figure 3) ans. the following questions. a)Compare difference between monocot and dicot? ______________________________________________ ______________________________________________ b)For the three seeds pick ans. the following: Growth rate ?Find where the seeds located? Pull them out and look at the root what are lateral,primary? Which one growth better or faster? Pull out and observe the length roots? _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ C. Function of hormones obscession of leaf Select three pairs of leaf remove it from top of pediole. Add IAA to one side and control lanolin to the other and ans. questions. a)Obscission of leaf IAA thigh. Which pediole still stay on stem why? ______________________________________________ D. Stem Growth Take two stem flower find uppermost elongating intermode. put me side, don?t make smean. ans. question. a) Observe shape of stem? Compare different concentration why? ______________________________________________ ______________________________________________ VI. CONCLUSION. ______________________________________________ ______________________________________________ |