Germination lab experiment

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Table of Contents

Introduction        

Research question        

Hypothesis        

Materials:        

Variables:        

Methods:        

End result        

Materials:        

Variables:        

Methods        

Picture proof of experiment        

Results - Table        

Graph        

Discussion:        

Conclusion:        

Evaluation:        

Follow up experiment:        

Bibliography        

Introduction

In this experiment we will be focusing on the factors, which influence the process of germination of a plant. Germination is the process when a seed sprouts from dormancy. The seeds are placed in soil or in any type of wet paper towel. It is basically the development of a seedling to a seed. The optimal germination pH is between 6 and 7.5. The cotyledons store food for the baby plant inside the seed. There are a few basic steps, which take place during germination

1. The seed absorbs water until it swells and smoothens its exterior wrinkles.

2. The seed then swells until the coat of the seed is ready to burst open.

3. The food, which was stored in the cotyledons or endosperm, soaks up water and the substances dissolved in it.

4. The enzymes then absorb the stored food and respiration begins. Energy and raw materials are gained through food for cell division and growth.

5. Then the radical appears, after which the pumule appears.

6. The seedlings then gain fresh weight through absorbing more water and thus lose dry weight. This continues until enough leaves get matured to produce through photosynthesis faster than it is used for growth.

   

In this picture you can see the process of germination

Requirements for the process of germination:

  • Water – It is required to make the seed burst and break the seed coat and it is also needed to moisten the seed.
  • Oxygen – It provides the seed with metabolism.
  • Temperature – It effects the growth rate and cellular metabolic.
  • Light or darkness- needed for growth and energy.

Aim 

To answer the research question.

Research question

 How does the change in salinity affect the process of germination of a seed?

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Hypothesis

In my view the more the concentrated salt solution is used the less amount of seeds will be germinated. From my previous knowledge of the process of osmosis, I have made this conclusion. Osmosis is the movement of water particles from an area of high concentration to an area of low concentration. In the case where the water outside the seed is more saline means solution is hypertonic (Less concentration of water then the seed), water diffuses out of the seed causing the seed to shrivel and die. On the other hand, if outside solution is hypertonic (More ...

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