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

MAKE A NEW ENTRY- PHOTOSYNTHESIS DETAILS-12/7

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?

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

Place where photosynthesis takes place

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?

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

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

VASELINE VASELINE

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

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

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

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

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

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

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?

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

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

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

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

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

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

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

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

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

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

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

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

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?

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

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

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

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

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.

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.

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

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

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

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

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

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

CONDITIONS: DAY 1 HIGH CO2 LOW CO2 NO LIGHT

 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