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.

______________________________________________

______________________________________________

Word Count: 329