Transpiration Lab

By: Brittany Q. / Annie R. / Katy T. / Vanessa T.

Controlled Group

Project Setup


Problem: (Class perspective) We want to see the effects on different manipulated variables. We are the controlled group.


Hypothesis: If there are no manipulated variables, then there will be no change in the leaf because there is no influence on it.



Describe how the control would be set up: The leaf would be connected to the potometer and there would be no other outside effects on the plant.


Description of 3 Constant factors used in this lab:

Graph paper - one paper for each leaf

Time- One minute intervals for fifteen minutes

Potometer- one regular potometer

Water- ¼ cup

Materials

Procedure

  1. Fill potometer with water and attach leaf at the end of the tube

  2. Let leaf sit and record results every 1 minute intervals for 15 minutes. (there will be 7 data sets)

  3. Put transpiration information in table.


Manipulated variable procedure: We are the controlled group so we will not be having any manipulated variable of procedure.


Control Procedure: Are control will be at room temperature with no manipulated variables.

Observations

Big image

Analysis

The leaf we used was going through osmosis already from the last period.


Our TR equalled 4.055150041e -7

Conclusion

Our leaf had no manipulated variable, so there was no drastic changes of water absorption or evaporation.