ap bio lab 5 - 1 Determining the rates of transpiration in...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Determining the rates of transpiration in a basil and leaf plant when exposed to an ambient, humid, intense light, and windy conditions Advanced Placement Biology Mr. Brothwell Samuel Castrejon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Abstract The use of a potometer that contained tubing with a calibrated pipette that read in milliliters was used to determine the effects of transpiration on a pepper plant and a basil plant when introduced to various environmental conditions. The conditions were for different conditions and they were as following: intense light, wind, humidity, and ambient. After a thirty minute time span the completion of the experiment as complete and the experiment had many patterns that were found in each condition. it was found that an ambient condition had no effect on the rate of transpiration in either the pepper plant and the basil plant though. The wind condition was found that it didn’t cause a great amount of effect on the rate of transpiration which may have been caused to many errors during the experiment. Humidity was found to cause the most water loss and the intense light condition causing the most water lost. This laboratory significant because it shows how different plants are affected by different environments. It also shows why certain specific plants strive in different environments and those that would suffer when placed in the same environment, this is significant in explaining why a cactus can live in an intense light environment because of its unique rate of transpiration. Materials and Methods Logger Pro, a computer program was used for this experiment, and under this program “Experiment 11D” was opened from the Biology with Computers Folder. 20 germinating seeds were taken from a tray of water and then were blotted dry with a paper towel. The temperature of the room was then recorded with the use of a thermometer and the 20 germinated seeds were then placed in a respiration chamber. A CO 2 -O 2 tee neck was inserted into the neck of the respiration chamber and then CO 2 and O 2 sensors were
Background image of page 2
3 placed into the openings of the tee. To prevent any damange, the stopper on the shaft of the CO 2 sensor should be gently twised. Complete set up for experiment should resemble Figure 1. Figure 1 The Set up for the Respiration Chamber with the Tee inserted and both the sensors in place with the O 2 on the top and the CO 2 sensor on the side. After four minutes of stabilizations, the data was collected with the Logger Pro program for ten minutes. After ten minutes, the data was stored using Logger Pro. The germinating seeds were removed from the respiration chamber and placed into a 100 mililiter beaker of ice and water. The tee should be removed and the respiration chamber should be rinsed with water and dried thoroughly with the use of a paper towel. 20 non- germinated seeds were placed in the respiration chamber and the same process was repeated to find CO 2 and O 2 rates.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

ap bio lab 5 - 1 Determining the rates of transpiration in...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online