Experiment Report!

The Function
Xylem Tissue in Plant

Objective :

Student are able : Identifying xylem tissue in plant 

Device and Materials :

1. Beaker
2. Colored solution
3. Stem of celery
4. Syrup

Work Procudering :

Step 1 : Place a celery stem, with its leaves infact in a beaker of colored water as in figure

Step 2 : Place a second stem of about the same weight, but with all it’s leaves removes, in another beaker of colored water.

Step 3 : After 20 minutes, remove both stalks and cut the stems at regular intervals to see how far the colored had risen.

Experiment :

The experiment process

The condition of the stem after 20 minutes experiment

The Result of Experiment :

The experiment is failed.  

The reasons are :

-       The celery stem can’t absorb the liquid from the beaker.

-       Every plants have different condition of xylem, and the syrup molecule have different compositions.

-       The experiment time should be more than 20 minutes for getting the best result

-       The diameter stem of celery is too small, so we cannot see the absorption process there.

Conclusion :

The experiment is failed, and it doesn’t prove the theory of transpiration – pull by Dixon and Joly. There are many reasons why it is not the same with the theory.  

Literatural :

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/X/Xylem.html