Biology lab report…i need this report completed asap have to be

Student Name __________________________ Date____________

 

 

 

 

LAB REPORT EVALUATION MATRIX (Biology 156)

 

 

 

GOOD AVERAGE POOR NOT PRESENT

 

(BUT NEEDED)

 

ABSTRACT to include the following (10 pts)

 

250 words or less _______ ________ _______ _______

 

problem investigated _______ ________ _______ _______

 

methods _______ ________ _______ _______

 

major results _______ ________ _______ _______

 

conclusions _______ ________ _______ _______

 

significance of findings _______ ________ _______ _______

 

TOTAL _______

 

 

INTRODUCTION to include the following (20 pts)

 

sufficient background info on organism/system

 

with citations _______ ________ _______ _______

 

problem clearly defined _______ ________ _______ _______

 

purpose and goals _______ ________ _______ _______

 

hypothesis/prediction _______ ________ _______ _______

 

TOTAL _______

 

 

MATERIALS AND METHODS to include the following (20 pts)

 

summary of process _______ ________ _______ _______

 

purpose of a procedure _______ ________ _______ _______

 

no excess mundane details _______ ________ _______ _______

 

TOTAL _______

 

 

RESULTS to include the following (15 pts)

 

Tables and graphs clearly labeled _______ ________ _______ _______

 

Narrative includes summary tables and graphs _______ ________ _______ _______

 

TOTAL _______

 

 

DISCUSSION to include the following (20 pts)

 

interpretation of results _______ ________ _______ _______

 

Explanation of significance of results _______ ________ _______ _______

 

has related discussion of results to the goals,

 

hypothesis and purpose of experiment, including

 

conclusions _______ ________ _______ _______

 

includes citations _______ ________ _______ _______

 

TOTAL _______

 

 

LITERATURE CITED to include the following (5 pts)

 

listed alphabetically _______ ________ _______ _______

 

cited properly within narrative of paper _______ ________ _______ _______

 

correct format of citation _______ ________ _______ _______

 

TOTAL _______

 

 

WRITTEN EFFECTIVELY to include the following (10 pts)

 

written clearly _______ ________ _______ _______

 

Title page _______ ________ _______ _______

 

use of metric system _______ ________ _______ _______

 

each paragraph conveys a single major idea and has

 

topic sentence at beginning _______ ________ _______ _______

 

pages numbered _______ ________ _______ _______

 

avoidance of I and me statements _______ ________ _______ _______

 

TOTAL _______

 

 

Lab Report Grade ________

 

 

 

Using Transpirometers Must be put in your own word

 

 

Preparing the Plant (this can be done hours before the experiment is to be conducted):

 

1. Select a plant that has a section of stem that is of slightly larger diameter than the tan

 

rubber tubing attached to the pipette tip.

 

2. Cut the plant off at its base, below where the diameter is slightly larger than the rubber

 

tubing. Immerse cute end in pan of water.

 

3. Immerse the pipette with rubber tubing attached in the pan of water to remove all air from

 

the pipette and tubing. This may require pinching and squeezing the tubing. All air

 

bubbles must be removed.

 

4. With the stem submerged, cut the plant again at the point where the stem is slightly larger

 

than the rubbing tubing. Keep the cut stem under water at all times.

 

5. Slide the rubber tubing over the cut stem.

 

6. Hold the plant and tubing out the water and check for leaks. If air percolates into the tip

 

of the pipette right away then there is a leak. If there is a leak, resubmerge and try sliding

 

the tubing onto the stem farther.

 

Preparing the Apparatus:

 

1. Flush the system by opening the screw valve below the reservoir. Flush until no bubbles

 

leave the micropipette then clamp off the micropipette using the spring clamp. Continue

 

flushing until no bubbles are present in the line where the plant will be inserted.

 

2. Insert the plant and pipette combination into the tube. Wrap a paper towel around the

 

stem of the plant and insert the plant into the open clamp. Clamp just enough to hold the

 

plant upright.

 

3. Open the spring clamp on the line leading to the micropipette.

 

4. Open the screw valve on the reservoir just enough for water to drip from the micropipette

 

and then close the screw valve. Blot the drop from the tip of the pipette.

 

5. If the leaves of the plant are very wet, gently blot them dry.

 

6. Transpiration should be noticeable within a few minutes as water is drawn from the

 

micropipette.

 

Measuring Transpiration Rates:

 

1. The micropipette is marked at the 100 μL point. Students can measure the length to the

 

mark (usually about 88 mm) and then calculate a conversion factor (88 mm/100 μL).

 

Using the conversion factor they can calculate the volume transpired per unit time.

 

2. Factors that may affect transpiration rates are light, heat, and wind. However, exposure

 

to extremes of heat or wind may cause the plant to close its stomates rather than transpire

 

more. This might be something to try at the end of a lab period.

 

Group: Wind     
Transpiration Data                    
  Cumulative Distance (mm) Average   Rate Rate Transpiration    
  0 (min) 5 (min) 10 (min) 15 (min) Temp ( C ) Surface Area (mm2) (mm/min) (uL/min) (uL/min/mm2)    
Control 0 1 8 13 24 7596 0.867 0.986 1.30E-04    
                       
                       
  Cumulative Distance (mm) Average   Rate Rate Transpiration Difference % Difference
  0 (min) 5 (min) 10 (min) 15 (min) Temp ( C ) Surface Area (mm2) (mm/min) (uL/min) (uL/min/mm2) Treatment – Control (Treatment – Control)/Control * 100
Wind 0 5 12 17 22 7,596 1.13 1.290 1.70E-04 4.00E-05 30.77%
                       
                       
  Group: Light
Transpiration Data                    
  Cumulative Distance (mm) Average   Rate Rate Transpiration    
  0 (min) 5 (min) 10 (min) 15 (min) Temp ( C ) Surface Area (mm2) (mm/min) (uL/min) (uL/min/mm2)    
Control 0 1 8 13 24 7596 0.867 0.986 1.30E-04    
                       
  Cumulative Distance (mm) Average   Rate Rate Transpiration Difference % Difference
  0 (min) 5 (min) 10 (min) 15 (min) Temp ( C ) Surface Area (mm2) (mm/min) (uL/min) (uL/min/mm2) Treatment – Control (Treatment – Control)/Control * 100
Light 0 7 16 25 23 7964 1.67 1.897 2.38E-04 1.08E-04 83.42%