The purpose of this experiment was to find out what the effect of the auxin 2,4-dichlorophenoxy acetic acid is on the growth of pea plants.

Authors Avatar

Abstract

        The purpose of this experiment was to find out what the effect of the auxin 2,4-dichlorophenoxy acetic acid is on the growth of pea plants. After research on the topic the hypothesis was developed. The hypothesis was that if the pea plants are grown with 2,4-D hormone then they will not grow as fast as the control group of plants because the hormone inhibits growth. To perform this experiment pea plants were grown for two weeks without any kind of paste. Observations were taken and measurements made. Then the hormone paste was applied to half of the plants and the other half got a paste containing no hormones. For the next two weeks, observations were made and the plants were measured twice more.

        The results show that after the pastes were applied the pea plants with the hormonal paste actually became shorter, on average. These plants were looking withered. The plants with the control paste continued to increase in height and were healthier than the experimental group. After two weeks with the hormone paste the plants average height is less than it was after one week of hormone paste.

        

The effect of the auxin 2,4-dichlorophenoxy acetic acid on the growth of pea plants.

2 Bihani, Sipra

AP/IB Biology

1st Period

12/01/03

Table of Contents

Planning                        page 1

Data Tables                        page 2

Graph                                page 6

Calculations                        page 7

Join now!

Discussion                        page 8

Conclusion                         page 9

Planning

Problem Statement: What is the effect of the auxin 2,4-dichlorophenoxy acetic acid  on the height of pea plants?

Hypothesis: If the pea plants are grown with 2,4-D hormone then they will not grow as fast as the control group of plants because the hormone inhibits growth.

Subjects: pea plants (pisum sativum)

...

This is a preview of the whole essay