1. Block Day- 12/7 Homework: Study for Checkup on Friday
Checkup will include:
Inputs and outputs of photosynthesis
Why is soil NOT food?
What is essential for plants?
Food for Plants Test Next Week=Block Day

2. MAKE A NEW ENTRY-
PHOTOSYNTHESIS DETAILS-12/7

3. WE KNOW PLANTS NEED LIGHT, CO2, AND WATER TO PERFORM PHOTOSYNTHESIS.
WHY CAN’T WE STAND IN THE SUN/LIGHT AND DRINK WATER AND INHALE CO2 AND MAKE SUGAR LIKE PLANTS DO?

4. VIDEO CLIP 1– PHOTOSYNTHESIS
VIDEO CLIP 2– CHLOROPLASTS AND PHOTOSYNTHESIS

6. Place where photosynthesis takes place

9. WHY DO PLANTS PERFORM PHOTOSYNTHESIS?
WHAT IS THE ROLE OF THE SUN IN PHOTOSYNTHESIS?
WHAT WOULD HAPPEN TO AMOUNT OF GLUCOSE/STARCH IN A PLANT IF WE BLOCKED THE AIR (CO2) FROM ENTERING A LEAF?

10. BOTH PLANTS STILL HAVE ACCESS TO LIGHT AND WATER—BUT THE PLANT ON THE RIGHT HAS VASELINE ON THE LEAVES TO BLOCK AIR

13. DRAW THE SET UP OF THE PLANT—SHOWING HOW WE CAN REDUCE THE AMOUNT OF CO2 ENTERING THE LEAF

14. VASELINE
VASELINE

15. Hypothesis Prediction
Glucose and starch in the leaves are built using a form of carbon taken in from the environment.
LIMITED CO2 LEAF:
CONTROL LEAF:
Glucose and starch in the leaves are NOT built using a form of carbon taken in from the environment.
LESS/NO STARCH
WILL HAVE STARCH
BOTH WILL HAVE/NOT HAVE STARCH

16. BOTH PLANTS STILL HAVE ACCESS TO LIGHT AND WATER—BUT THE PLANT ON THE RIGHT HAS VASELINE ON THE LEAVES TO BLOCK AIR

17. (covered with Vaseline)
Control leaf
(open to atmosphere)
Limited CO2 leaf
(covered with Vaseline)

18. CONTROL (normal atmosphere)
Results: Starch indicator with CO2 – limited and control radish plants
LEAF
INITIAL COLOR
COLOR AFTER INDICATOR
LIMTED-CO2
CONTROL (normal atmosphere)
YELLOW/PALE GREEN
LIGHT/IODINE COLOR
DARK GREEN
BLACK

19. 02 CO2 H20 GLUCOSE LIGHT CHEMICAL
Based on our experiments and what we have learned, show the inputs and outputs of PHOTOSYNTHESIS
LIGHT
GLUCOSE
CHEMICAL
CO2 02
H20

20. Open to ENTRY-
BUILDING BLOCKS FOR PLANTS
GET A PACKET (1 PER TABLE)

21. SO, WHERE DO YOU THINK THE STARCH IN THE POTATO COMES FROM?
POTATOES CONTAIN STARCH AND GROW UNDERGROUND.
ONLY THE ABOVE GROUND PARTS HAVE GREEN LEAVES.
SOIL AND WATER AREN’T FOOD.
SO, WHERE DO YOU THINK THE STARCH IN THE POTATO COMES FROM?

22. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 0
POTATO (tuber)
ROOT

23. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 1
POTATO (tuber)
ROOT

24. Time Interval
Observations
Time 0 - Time 1
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5

25. Time Interval
Observations
Time 0 - Time 1
 GLUCOSE IS PRODUCED IN THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5

26. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 2
POTATO (tuber)
ROOT

27. Time Interval
Observations
Time 0 - Time 1
 GLUCOSE IS PRODUCED IN THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM

28. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 3
POTATO (tuber)
ROOT

29. Time Interval
Observations
Time 0 - Time 1
 GLUCOSE IS PRODUCED IN THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO

30. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 4
POTATO (tuber)
ROOT

31. STARCH IS BEING ASSEMBLED IN THE POTATO
Time Interval
Observations
Time 0 - Time 1
 GLUCOSE IS PRODUCED IN THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO
STARCH IS BEING ASSEMBLED IN THE POTATO

32. STEM (vascular tissue)
LEAF
STEM (vascular tissue)
Time 5
POTATO (tuber)
ROOT

33. STARCH IS BEING ASSEMBLED IN THE POTATO
Time Interval
Observations
Time 0 - Time 1
 GLUCOSE IS PRODUCED IN THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO
STARCH IS BEING ASSEMBLED IN THE POTATO
MORE STARCH IS BEING ASSEMBLED IN THE POTATO AND 1 GLUCOSE IS GONE IN THE ROOT

34. SO, WHERE DO YOU THINK THE STARCH IN THE POTATO COMES FROM?
POTATOES CONTAIN STARCH AND GROW UNDERGROUND.
ONLY THE ABOVE GROUND PARTS HAVE GREEN LEAVES.
SOIL AND WATER AREN’T FOOD.
SO, WHERE DO YOU THINK THE STARCH IN THE POTATO COMES FROM?

35. WHERE DID THE GLUCOSE COME FROM IN TIME 1?
SUMMARY QUESTIONS
WHERE DID THE GLUCOSE COME FROM
IN TIME 1?
2. WHAT FUNCTION DOES IT APPEAR THE
STEM PLAYS?
GLUCOSE WAS MADE FROM CO2 IN THE AIR AND WATER FROM THE ROOTS
THE STEM IS FOR TRANSPORT

36. SUCROSE TRAVELS THROUGH THE STEM
3. WHAT FORM OF CARB TRAVELS THROUGH THE STEM? 4. WHERE DOES MOST OF THE ASSEMBLY INTO STARCH TAKE PLACE?
SUCROSE TRAVELS THROUGH THE STEM
MOST OF THE STARCH IS ASSEMBLED IN THE POTATO.
A LITTLE BIT IS ASSEMBLED IN THE LEAVES

37. 5. WHY DO YOU THINK THE PLANT LINKS MANY GLUCOSE MOLECULES TOGETHER IN THE TUBER?
STARCH STORAGE. CAN BE BROKEN APART TO USE AS FOOD FOR THE NEXT YEAR’S PLANT

38. 6. WHERE DOES THE GLUCOSE AND STARCH THAT ARE FOUND IN THE ROOT AND POTATO COME FROM? (WHERE DID IT START)
7. WHAT HAPPENS TO THE MISSING GLUCOSE IN TIME 5? WHY?
THE GLUCOSE CAME FROM THE LEAVES WHERE IT WAS MADE BY PHOTOSYNTHESIS
THE GLUCOSE WAS USED FOR ENERGY.
ROOTS GROW THROUGH THE SOIL—THIS TAKES ENERGY

39. OXYGEN IS AN INPUT AND CO2 IS AN OUTPUT.
8) WHAT PROCESS USES GLUCOSE OR OTHER FOOD MOLECULES TO PROVIDE ENERGY FOR MOVEMENT?
9) IF PLANTS PERFORM CELLULAR RESPIRATION LIKE ANIMALS DO, WHAT MOLECULE(S) SHOULD WE BE ABLE TO MEASURE AS EVIDENCE?
CELLULAR RESPIRATION BREAKS THE BONDS OF GLUCOSE TO RELEASE CHEMICAL ENERGY
OXYGEN AND CO2.
OXYGEN IS AN INPUT AND CO2 IS AN OUTPUT.

40. WHY WOULD A PLANT NEED TO USE GLUCOSE?
WHAT PROCESS BREAKS APART FOOD MOLECULES TO RELEASE ENERGY?
IF PLANTS PERFORM CELLULAR RESPIRATION LIKE ANIMALS DO, WHAT MOLECULES SHOULD WE BE ABLE TO MEASURE AS EVIDENCE?
FOR THE SAME REASON WE DO—ENERGY FOR MOVEMENT/GROWTH
CELLULAR RESPIRATION BREAKS THE BONDS OF GLUCOSE TO RELEASE CHEMICAL ENERGY
OXYGEN AND CO2. OXYGEN IS AN INPUT AND CO2 IS AN OUTPUT.

41. Make a new entry-
DO PLANTS PERFORM CELLULAR RESPIRATION?
GET A PREDICTION CHART FROM THE FRONT COUNTER

42. BtB is an indicator for CO2
BLUE BtB= LOW CO2
YELLOW BtB= HIGH CO2

43. WE KNOW THAT IN THE LIGHT PLANTS WILL DECREASE THE AMOUNT OF CO2—THEY USE THE C AND O ATOMS TO MAKE GLUCOSE
BUT, WE ALSO KNOW THAT PLANTS NEED TO USE THE FOOD THEY MAKE FOR ENERGY AND CELLULAR RESPIRATION IS THE PROCESS TO GET THE ENERGY FROM THE FOOD

44. HOW CAN WE KEEP THE PLANTS FROM DOING PHOTOSYNTHESIS AND STILL SEE IF THE PRODUCE CO2 (PERFORM Cellular Respiration)?

45. Part 1: Initial Explanation and Predictions
We will look for color change in the BTB indicator. BTB is normally blue. If BTB changes to yellow that means more CO2 is in the container. If it changes from yellow to blue, there is less CO2

46. The amount of CO2 will… High CO2 Low CO2  increase  be the same
High CO2
Low CO2
The amount
of CO2 will…
 increase
 be the same
 decrease
What will happen to the color?
 stay yellow
 turn blue
 stay blue
 turn yellow
What do you predict will happen to the amount of CO2 in each chamber?
Explain your prediction for the plant with HIGH CO2.
Explain your prediction for the plant with LOW CO2

47. CONDITIONS: DAY 1
HIGH CO2
LOW CO2
NO LIGHT

48.  turned blue RESULTS:  stayed blue  turned yellow The amount
High CO2
Low CO2
The amount
of CO2 …
 increased
 was the same
 decreased
 decrease
What happened to the color?
 stayed yellow
 turned blue
 stayed blue
 turned yellow