Stomata Density Lab: Internal Assessment

Topics: Leaf, Stoma, Photosynthesis Pages: 10 (1633 words) Published: September 28, 2014
Internal Assessment Coversheet and Self-Assessment
Session:

Student Name:

SL/HL
Candidate Number:

Investigation title: Investigating a factor that affects stomata density in leaves

Syllabus topic(s):

Teacher’s Instructions and help given:

Candidate declaration:
“I confirm that this work is my own work and is the final version. I have acknowledged each use of the words or ideas of another person, whether written, oral or visual.”

Signed:
Escalante
Date:
15/09/14

Type your name on the line above.

Teacher’s Feedback:
Design
Data Collection and Processing
Conclusion and Evaluation

Check all the comments in your work to learn for next time.

Design
 
 
Complete / 2
Partial / 1
Not at all / 0
A
S
P
E
C
T
Define problem & select variables
Formulates a focused problem/ research question and identifies the relevant variables. Formulates a problem/research question that is incomplete or identifies only some relevant variables. Does not identify a problem/ research question AND does not identify any relevant variables.

Controlling variables
Designs a method for the effective control of the variables. Designs a method that makes some attempt to control the variables. Designs a method that does not control the variables.

Developing a method for collection of data
Develops a method that allows for the collection of sufficient relevant data. Develops a method that allows for the collection of insufficient relevant data. Develops a method that does not allow for any relevant data to be collected.

Marking Checklist:
complete & correct
½ incomplete
X incorrect or not attempted

Design
Aspect 1: Define the problem and select the variables

D1.1
Research Question or Aim clearly stated

D1.5
If a hypothesis is very helpful:
It is quantitative
A sketch graph is included, with explanation
Prediction is explained using scientific theory
Sources are cited

D1.2
IV correctly identified with units/ range

D1.3
DV (as directly recorded) correctly identified with units. Statement made if further calculations need to be performed on DV.

D1.4
Include background to investigation and/or refer to preliminary investigations.

D1.6
Important control variables identified and presented as table.

Aspect 2: Controlling variables

D2.1
Method to manipulate IV, including specific details of range or increments

D2.5
Discuss the likely impact of each control variable.

D2.2
Method for recording results, including units and uncertainty of tools (± ____ )

D2.6
Potential impact of each variable on results has been addressed.

D2.3
List of apparatus including sizes and uncertainty. Better add an annotated photo or diagram of equipment or experimental set-up.

D2.7
Specific method to keep each controlled variable constant has been explained clearly. This includes values of each controlled variable and equipment used to ensure or measure these values.

D2.4
Full citation of published protocol, if used (or elements thereof)

Aspect 3: Developing a method for collection of sufficient relevant data (D3.5 – D3.7 only considered if DCP not marked)

D3.1
Min. 5 increments (or 2 if comparing means) over a suitable range for the IV (unless comparing populations)

D3.5
Choice of data presentation method (chart or graph type) stated and explained.

D3.2
Min. 5 repeats (or 10 if comparing means) at each increment to ensure reliability and allow for stats.

D3.6
Explain how raw data will be transformed into processed data for comparison/ plotting

D3.3
Range of IV stated and explanation of how this range was chosen (refer D1.4).

D3.7
Choice of statistical test stated and explained.

D3.4
Method clearly, specific and easily replicated by the reader, if desired.

D3.8
Safety/ ethics concerns addressed, including animal...


Cited: Banas, Timothy. "How to Measure Stomata Density." eHow. N.p., n.d. Web. 13 Sept. 2014. .
- - -. "How to Measure Stomatal Density Read more : http://www.ehow.com/how_5996554_measure-stomatal-density.html Read more : http://www.ehow.com/how_5996554_measure-stomatal-density.html." eHow. N.p., n.d. Web. 13 Sept. 2014. .
Hershey, David. "Re: Does light intensity affect the number of stomata on a leaf and if so, how?" MadSci. N.p., n.d. Web. 14 Sept. 2014. .
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • stomata density Essay
  • Essay about Stomata Lab Report
  • Stomata Lab Report Essay
  • density lab Essay
  • Internal Assessment Essay
  • Density Lab Essay
  • The Internal Assessment Essay
  • Internal Assessment Essay

Become a StudyMode Member

Sign Up - It's Free