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Monday, May 20, 2019

Lab #10 – The Celery Experiment

Lab #9 – The Celery Experiment

Problem

How does a plant get water from its roots to its leaves?  Are all of the cells and tissues in a plant the same, or are there differences?

Hypothesis 




Materials
Celery
Celery seeds
Food coloring
Water
Plastic cup
Scissors
Ruler
Hand lens
  
Procedure
 1.          Make observations of your celery seeds in the Results.
2.          Make observations of your celery stalk in the Results.
3.          Cut about 2.5 cm off the bottom of the celery stalk and make observations on the celery stalk’s cross section.
4.          Fill up a plastic cup with 250 ml of water and add two drops of food coloring.  Put your celery stalk, cross section down and leaves up, into the cup of colored water. 
5.          Make observations on your celery stalk experiment.  Make sure to include color and other details such as height, number of leaves, width of cross section, etc.
  
Results
1A                                                                            1B
Observations on the celery seed
Observations on the celery seed magnified


2A                                                                            2B
Observations on the celery stalk
Observations on the celery stalk magnified


3A                                                                             3B
Observations on the celery stalk’s cross section
Observations on the celery stalk’s cross section magnified


4A                                                                            4B
Observations on the celery stalk in colored water
Observations on the celery stalk in colored water magnified



5A                                                                            5B
Observations on the green onion
Observations on the green onion magnified








Analysis
1) Observe: What happened to your celery stalk overnight?
2) How do you know that the water reached the top of the plant?  Cite your evidence.   
3) Look for small circles at the bottom of the stalk that are the color of the food coloring you used. (These circles are xylem, the tubes that carry water up the plant.) Draw pictures and make observations about the xylem in your celery.
4) Infer: What happened to the xylem?  
5) Review: How does a plant get water from its roots to the rest of the plant?
6) Are all of the cells and tissues in a plant the same, or are there differences?  Where is your evidence?


Observations on the celery stalk in colored water




Conclusion














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