Cycle 3 . Initial Ideas. Is soil food for plants?. Suppose a child was given a plate with 5 pounds of food to eat as quickly as he or she could. Predict what would happen to the weight of that child as he or she ate the food. .
Suppose a child was given a plate with 5 pounds of food to eat as quickly as he or she could. Predict what would happen to the weight of that child as he or she ate the food.
Now think about a young tree planted in a bucket of soil. Over time, what would happen to the weight of the tree and of the soil.
What is this process called?
2) Your warm-up
3) Your exit slip…put in the folder on your table.
*What two complex carbohydrates are found only in plants ?
(ex. celery & potatoes)
Write your idea about how starch is made in a potato. Where do the atoms originate and how do they become part of the potato?
* Note the NAME of the molecule
& the LOCATION.
2) Complete the Matter diagram & your NEW explanation of how plants get the building blocks to make starch.
Pictures of the same leaf were taken after removing pigment with ethanol and after staining with iodine to show the presence of starch:
with iodine to
Vaseline leaf (no carbon dioxide)
Control leaf ( access to carbon dioxide)
(open to atmosphere)
Limited CO2 leaf
(covered with Vaseline)
2) Use your microscope instructions to focus the slide and find the chloroplasts.
3) Use this time to check your plants (light & dark).
What & How into a leaf?
Transformation of materials at macroscopic scale into a leaf?
(From roots to leaves)
(From leaves to all parts of tree)
(From leaves to air)
(From air to leaves)
Take out your “conclusions” from the plant experiment. (Atoms,Carbon, Energy sheet)