How Does Sodium Chloride Effect the Growth of Phaseolus Vulgaris?

Topics: Sodium chloride, Common bean, Salt Pages: 11 (2032 words) Published: May 18, 2013
How does sodium chloride effect the growth of Phaseolus vulgaris? [Type the document subtitle]


1.1 Defining the problem2
* Focus / research question
* Hypothesis
* Background information / theory
* Investigation Variables

1.2 Controlling Variables3
* Treatment of Controlled Variables
* Control Experiment

1.3 Experimental Method4
* Materials
* Risk Assessment
* Method

2.1 Recording Raw Data
* Quantitative Data
* Qualitative Data

2.2 Processing Raw Data
* Statistical Processing – calculations

2.3 Presenting Processed Data
* Result (s) table (s)
* Graph (s)

3.1 Conclusion
* Conclusion statement
* Conclusion explanation

3.2 Evaluation Procedures
* Reliability
* Limitations / Weaknesses / errors in Laboratory Investigation * Significance of weaknesses on experimental results

3.3 Improving the Investigation
* Modifications to experiment

APPENDIX A Risk Assessment and Laboratory Order Form
1.1Defining the problem

Focus / Research question
How does sodium chloride in measurements of 0.5%, 2%, 5%, 10% and 15% affect the shoot development, this will be measured from the base of the plant to the tip, of the Phaseolus Vulgaris (green beans)? Hypothesis

If sodium chloride is added to the green bean then the growth of the plant will be decreased.

Background Information / theory
Sodium Chloride (Salt) is a crystalline compound that is a mineral that is component of seawater. Salt is used in many different ways but it is mainly used for cooking. Salt in the soil with plants will cause the plants to decrease in growth. This is because plants obtain most of their water from the soil and when salt is in the soil it becomes harder for the plant to retrieve water (Hudson, 2012). This therefore means the plant will have to use more energy to retrieve water and this makes the plant dehydrated. When this happens the plant growth will be slow and stunted and its fruit will be really small. 

Investigation variables
Table 1: Practical Investigation Variables

Variables Identified| Type of variable|
| |
Water| Controlled|
Concentration of salt| Independent |
Sunlight| Uncontrolled |
Soil| Controlled |
Type of plant| Controlled|
Time| Controlled|
| | |
| | |

1.2 Controlling Variables

Treatment of controlled variables

TABLE 2: Control Treatment of Variables
Variables| Control treatment|
Soil type | The same type and amount of soil for all the different trials| Type of plant| Green beans will be used for all the trials| Water| Each of the plants will each get 750ml of water for all the trials| Time| Each trial of the plants will have 10 days for recording data|

Control Experiment

In the experiment the environment of the plants and where it was placed were all controlled to minimalize any uncontrolled variables. This was done so that it would not affect the dependant and independent variables.

1.3 Experimental Method
Apparatus Required| Quantity|
Green beans| 4 packets |
Soil | 2 bags of 20L|
Small pot plants| 6 pots|
Ruler(30cm)| 1 |
Measuring jar (1 litre)| 1 |
Mass balance| 1|
Sodium Chloride | 1 Pack|


Practical Safety and Risk Assessment
See Appendix 1

1. Place soil in plant pots and put pots in direct view of the sun 2. Plant 3 seeds of green beans into the pot
3. Give the plant 750ml of water every day for 10 days
4. Record the shoot development of the plant with a ruler for 10 days (cm) 5.Repeat steps 1-4 for 5...
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