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Plant Respiration and Photosynthesis 012-10974 r1.0

Plant Respiration and Photosynthesis

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Plant Respiration and Photosynthesis. 012-10974 r1.04. Plant Respiration and Photosynthesis. Introduction. Each page of this lab that contains the symbol - PowerPoint PPT Presentation

Text of Plant Respiration and Photosynthesis

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Plant Respiration and Photosynthesis012-10974 r1.041

The Snapshot button is used to capture the screen. The Journal is where snapshots are stored and viewed.The Share button is used to export or print your journal to turn in your work.

IntroductionJournals and Snapshots

Plant Respiration and Photosynthesis

Each page of this lab that contains the symbol

should be inserted into your journal. After completing a lab page with the snapshot symbol, tap (in the upper right hand corner) to insert the page into your journal. Note: You may want to take asnapshot of the first page ofthis lab as a cover page for your journal.2Lab ChallengeDo plants perform cellular respiration in addition to photosynthesis?

Plant Respiration and Photosynthesis3BackgroundPhotosynthesisThe process of photosynthesis occurs in the chloroplasts of plants. Light is necessary for the entire photosynthesis process to occur.The formula for photosynthesis is: 6CO2 + 6H2O + LIGHT ENERGY ----> C6H12O6 + 6O2 Carbon dioxide, water, and light are required to produce glucose and oxygen. Plant Respiration and Photosynthesis4This image is a reminder totap to take a snapshot of the page after you have entered your response.

Self CheckIf you were measuring carbon dioxide levels in a terrarium during photosynthesis, you would expect to see the levels ________.increasedecreasestay the samePlant Respiration and Photosynthesis

L6 Text Box[The correct choice is]5...BackgroundCellular RespirationThe process of cellular respiration occurs in the mitochondria of ALL cells. Cellular respiration converts the glucose made by photosynthesis into ATP (adenosine triphosphate), which is the energy source that is usable by cells.The formula for cellular respiration is: C6H12O6 + 6O2 ----> 6CO2 + 6H2O + Energy (ATP molecules) Glucose and oxygen produce carbon dioxide, water and ATP.Plant Respiration and Photosynthesis6

Self CheckIf carbon dioxide levels were being monitored inside a terrarium, you would expect to see an increase in CO2 levels when the plants were in ___________.darknesslightCanadaPlant Respiration and PhotosynthesisL6 Text Box[The correct choice is]7SafetyFollow all common lab safety procedures.Do not allow the CO2 sensor to get wet!

Plant Respiration and Photosynthesis8Materials and EquipmentCollect all of these materials before beginning the lab.PASPORT CO2 Gas SensorSensor extension cableSampling bottle (included with the sensor)Large beaker or aquarium (to act as a heat sink)Box or heavy clothAluminum foilLamp, 100-wattMint plantWater, 1 LPlant Respiration and Photosynthesis9

The steps to the left are part of the procedure for this lab activity. They are not in the right order. Determine the correct sequence of the steps, then take a snapshot of this page.Sequencing Challenge

A. Cover the bottle with a box or cloth and record CO2 production in the dark.B. Record CO2 production when the plant is exposed to the light.C. Analyze the changes in CO2 production in dark vs. light.D. Add several stems and leaves of a small plant into the sampling bottle.Plant Respiration and PhotosynthesisL6 Text Box[The correct sequence is]10Setup: DarknessAttach the Carbon Dioxide Gas Sensor to a sensor extension cable and connect it to the SPARK Science Learning System.Add 25 mL of water to the sample bottle.Gently push several stems of the plant into the sampling bottle. Try to arrange the leaves so that they are facing outward.Calibrate the sensor by pushing and releasing the green button on the sensor. When the green light in the button begins flashing again, the sensor is calibrated.

Plant Respiration and Photosynthesis11Prediction: GeneralQ1: Why do you think that water is needed in the sample bottle?Plant Respiration and Photosynthesis

L45 Text Box[Water is needed in the sample bottle]12

Q2: What do you think will happen to the CO2 level in the bottle while the plant is in the dark? Explain why. Collect Data: DarknessPlace the CO2 Gas Sensor firmly into the sampling bottle.Carefully cover the sample bottle with a box or heavy cloth to block out any light.Tap to begin data collection.Record data for 10 minutes and then tap to stop data collection. Plant Respiration and Photosynthesis

L6 Text Box[I think the CO2 level will]13Plant Respiration and Photosynthesis14

Q2: What is the purpose of the aluminum foil? Q3: What is the purpose of the beaker/ aquarium full of water?Setup: LightRemove the cloth or box from the sampling bottle and place the bottle on aluminum foil.Place a large beaker of water or aquarium between the light source and the beaker.Turn on the light source and wait 3 minutes to allow photosynthesis to begin.

Plant Respiration and PhotosynthesisL6 Text Box[The purpose of the aluminum foil is][The purpose of the beaker is]15

Q4: What do you think will happen to the CO2 level in the bottle while the plant is in the light? Explain why. Collect Data: LightTap to begin data collection.Record data for 10 minutes and then tap to stop data collection. Plant Respiration and Photosynthesis

L6 Text Box[I think the CO2 level will]16Data AnalysisPlant Respiration and PhotosynthesisDetermine the change in CO2 concentration for both runs, and record the information in the data table on the next page.

* To Find the Difference Between Two Data Points:Tap to open the tools palette. Tap and then tap two points on the data run. Adjust using both buttons and then tapTap to display the differences.

17Data Analysis2. Record the initial, final, and change in CO2 concentration for all runs, in the data table to the left.

*To Enter Data into a Table: 1.Tap to open the tool palette.2.Tap then tap a cell in the data table to highlight it in yellow.3.Tap to open the Keyboard screen.

Plant Respiration and Photosynthesis

L1245 TableCol 1: [Condition: Dark, Light]Col 2: [Initial CO2 (ppm)]Col 3: [Final CO2 (ppm)]Col 4: [change in CO2 (ppm)]18

AnalysisWhat happens to the level of carbon dioxide gas when the plant is in the darkness? Why does this happen?Plant Respiration and PhotosynthesisL45 Text Box[The CO2 level ______________ when the plant is in the dark.][This occurs]19

What happens to the level of carbon dioxide gas when the plant is in bright light? Why does this happen?Plant Respiration and PhotosynthesisAnalysisL45 Text Box[The CO2 level ______________ when the plant is in the light.][This occurs]20

Was there greater change in the level of carbon dioxide in the darkness or light? Explain.Plant Respiration and PhotosynthesisAnalysisL45 Text Box[The greatest change in CO2 levels occurred when the plant was][This happens because]21

SynthesisWhat part of the activity shows the effect of cellular respiration on carbon dioxide levels in the chamber?Plant Respiration and PhotosynthesisL456 Text Box[When the plant is in the ___________________ it demonstrates the effect of cellular respiration on CO2 levels.]22

What is meant by the term "Carbon Cycle" in this activity?Plant Respiration and PhotosynthesisSynthesisL4 Text Box[Carbon cycle means]23

Explain how photosynthesis and cellular respiration are dependent on one another. Plant Respiration and PhotosynthesisSynthesisL456 Text Box[Phootsynthesis and cellular respiration are dependent on each other]24

If plants are able to photosynthesize, why do they also have to go through cellular respiration?Plant Respiration and PhotosynthesisSynthesisL45 Text Box[Plants must go through cellular respiration]25

Write a conclusion for this experiment based on the following question, "Does the level of carbon dioxide gas produced in a closed environment change in dark and in bright light conditions?"Plant Respiration and PhotosynthesisSynthesisL4 Text Box[I conclude]26

Multiple ChoiceWhich of the following are required for photosynthesis to occur?lightchloroplastscarbon dioxideall of the abovePlant Respiration and PhotosynthesisL6 Text Box[The correct choice is]27

Multiple ChoiceRespiration can occur in a plant ____________.in the lightin the darkwhen oxygen is presentall of the abovePlant Respiration and PhotosynthesisL6 Text Box[The correct choice is]28

Multiple ChoiceWhen a bright light is turned on a plant, which reaction(s) take place?photosynthesis onlycellular respiration onlyphotosynthesis and cellular respirationnothingPlant Respiration and PhotosynthesisL6 Text Box[The correct choice is]29

respiration then photosynthesisphotosynthesis then respirationlight-dependent reactions onlylight-independent reactions onlyMultiple Choice4. What is shown in the graph of CO2 concentration vs. Time for a plant?Plant Respiration and PhotosynthesisL6 Text Box[The correct choice is]30

You have completed the lab.Congratulations!Please remember to follow your teacher's instructions for cleaning-up and submitting your lab.Plant Respiration and PhotosynthesisColor scheme (RGB values)biology 121, 173, 54chemistry 0 176, 216physics 0, 102, 204earth 204, 102, 0middle 153, 102, 153elementary 255, 51, 0

31Images are taken from PASCO documentation, public domain clip art, or Wikimedia Foundation Commons

http://commons.wikimedia.org/wiki/File:Narzisse.jpghttp://commons.wikimedia.org/wiki/File:Peppermint_and_Corsican_mint_plant.jpghttp://commons.wikimedia.org/wiki/File:Rose_Geranium.jpghttp://commons.wikimedia.org/wiki/File:Sunflowers.jpg

ReferencesPlant Respiration and Photosynthesis32