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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?
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b)What?s the different reaction of different type of plants,
meaning Dwarf to Normal plants?
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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?
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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?
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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?
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VI. CONCLUSION.
______________________________________________
______________________________________________
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