Download - plant transpiration
![Page 1: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/1.jpg)
![Page 2: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/2.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 3: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/3.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 4: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/4.jpg)
Plant TranspirationPlant Transpiration
Lateral MovementLateral Movement
And And
Path of Water RisePath of Water Rise
![Page 5: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/5.jpg)
Plant transpiration
Introduction
Methodology
Light and Photosynthesis
IntroductionMethodology
Flowchart
Results and discussion
Summary and Conclusions
Results and discussion
Summary and Conclusions
![Page 6: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/6.jpg)
DefinitionDefinition
TranspirationTranspiration
evaporation of water from plants. It occurs evaporation of water from plants. It occurs chiefly at the leaves while their stomata are chiefly at the leaves while their stomata are open for the passage of COopen for the passage of CO2 2 and Oand O22 during during
photosynthesis.photosynthesis.
![Page 7: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/7.jpg)
Factors Affecting TranspirationFactors Affecting Transpiration
1.1. LightLight
2.2. HumidityHumidity
3.3. TemperatureTemperature
4.4. WindWind
5.5. Soil moistureSoil moisture
6.6. Internal Conc. Of COInternal Conc. Of CO22
![Page 8: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/8.jpg)
lightlight
Plants transpire more rapidly in the light than Plants transpire more rapidly in the light than in the dark. in the dark.
light stimulates the opening of the stomata. light stimulates the opening of the stomata. Light warms the leaf. Light warms the leaf.
![Page 9: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/9.jpg)
TemperatureTemperature
Plants transpire more rapidly at higher Plants transpire more rapidly at higher temperaturestemperatures
Temperature affects humidityTemperature affects humidity
![Page 10: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/10.jpg)
HumidityHumidity
When the surrounding air is dry, diffusion of When the surrounding air is dry, diffusion of water out of the leaf goes on more rapidly. water out of the leaf goes on more rapidly.
Humidity is affected by temperatureHumidity is affected by temperature
![Page 11: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/11.jpg)
WindWind
no breezeno breeze air is humid thus reducing the air is humid thus reducing the rate of transpirationrate of transpiration
breeze breeze humid air is carried away and humid air is carried away and replaced by drier air. replaced by drier air.
![Page 12: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/12.jpg)
Internal Concentration of COInternal Concentration of CO22
If COIf CO2 2 concentration decreases concentration decreases stomata stomata
opensopens
Reverse is also trueReverse is also true
![Page 13: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/13.jpg)
Underlying Principle of the Underlying Principle of the ExperimentExperiment
Rate of transpirationRate of transpiration = Rate of water absorption= Rate of water absorption
Transpiration decreases the water potential in the mesophyll cell, and thus, pulls water up from the roots and stems in vessels and xylems
![Page 14: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/14.jpg)
XylemXylem
Consists of tracheids and vessel cellsConsists of tracheids and vessel cells Transport water Transport water Have pits at the side to allow lateral movementHave pits at the side to allow lateral movement
![Page 15: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/15.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Light and Photosynthesis
IntroductionMethodology
Flowchart
Results and discussion
Summary and Conclusions
Results and discussion
Summary and Conclusions
![Page 16: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/16.jpg)
MethodologyMethodology
![Page 17: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/17.jpg)
Control set-upControl set-up Kept inside the room Kept inside the room
120 (botany lab)120 (botany lab) Away from electric Away from electric
fans and windowsfans and windows One branch covered One branch covered
with plasticwith plastic Held by iron clampsHeld by iron clamps Experiment lasts for Experiment lasts for
2 hours2 hours
![Page 18: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/18.jpg)
Under bright light set-upUnder bright light set-up
Kept inside the Kept inside the room 120 (botany room 120 (botany lab)lab)
Away from Away from electric fans but electric fans but BESIDE THE BESIDE THE WINDOWSWINDOWS
Held by iron Held by iron clampsclamps
Experiment lasts Experiment lasts for 2 hoursfor 2 hours
![Page 19: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/19.jpg)
Moving air set-upMoving air set-up
Kept inside the Kept inside the room 120 (botany room 120 (botany lab)lab)
BESIDE the BESIDE the electric fan but electric fan but away from the away from the windowswindows
Held by iron Held by iron clampsclamps
Experiment lasts Experiment lasts for 2 hoursfor 2 hours
![Page 20: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/20.jpg)
Blocked stomata setupBlocked stomata setup
Kept inside the room 120 (botany lab)Kept inside the room 120 (botany lab) Away from the electric fan and from the Away from the electric fan and from the
windowswindows Held by iron clampsHeld by iron clamps Experiment lasts for 2 hoursExperiment lasts for 2 hours Stomata were blocked by Petroleum jellyStomata were blocked by Petroleum jelly
![Page 21: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/21.jpg)
Lateral movement setupLateral movement setup
Lasts for 24 Lasts for 24 hourshours
![Page 22: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/22.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 23: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/23.jpg)
Results and DiscussionResults and DiscussionmL of HmL of H22O left O left
unabsorbed unabsorbed
ControlControl 3.23.2
Under strong sunlightUnder strong sunlight 1.51.5
Covered stomataCovered stomata 4.54.5
With Moving airWith Moving air 2.42.4
![Page 24: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/24.jpg)
Versus controlVersus control
Plants absorb more water if exposed to strong Plants absorb more water if exposed to strong light and moving airlight and moving air
More water transpires from the leaves if the More water transpires from the leaves if the plant is exposed to strong sunlight or moving plant is exposed to strong sunlight or moving air air
![Page 25: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/25.jpg)
Versus replicatesVersus replicates
Less water is absorbed if the stomata are Less water is absorbed if the stomata are blockedblocked
Less water is transpired when the stomata are Less water is transpired when the stomata are blockedblocked
![Page 26: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/26.jpg)
Covered branch in ControlCovered branch in Control
Water droplets form at the walls of the plastic Water droplets form at the walls of the plastic
![Page 27: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/27.jpg)
Begonia setupBegonia setup
A tube like structure was observed when begonia A tube like structure was observed when begonia absorbed the dyeabsorbed the dye
![Page 28: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/28.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 29: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/29.jpg)
Summary and ConclusionSummary and Conclusion
Plants transpire more if exposed to strong Plants transpire more if exposed to strong light and moving airlight and moving air
Plants transpire less if the stomata are blockedPlants transpire less if the stomata are blocked
![Page 30: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/30.jpg)
ConclusionConclusion
Plants transpire more if the moisture content of air Plants transpire more if the moisture content of air (humidity) is less than the concentration of water (humidity) is less than the concentration of water inside the leavesinside the leaves
Humidity of air adjacent to the plant leaf (or stomata) Humidity of air adjacent to the plant leaf (or stomata) is inversely proportional to heat, light and windis inversely proportional to heat, light and wind
Plants transpire more if there is more heat, light, and Plants transpire more if there is more heat, light, and windwind
![Page 31: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/31.jpg)
Presence of water dropletsPresence of water droplets
Presence of water droplets indicate that water Presence of water droplets indicate that water was released from the branchwas released from the branch
Specifically HSpecifically H220 was released from the stomata 0 was released from the stomata
and accumulated in the walls of the plasticand accumulated in the walls of the plastic
![Page 32: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/32.jpg)
Begonia setupBegonia setup
Water travels through the xylemWater travels through the xylem
Xylary elements are hollow Xylary elements are hollow
![Page 33: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/33.jpg)
![Page 34: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/34.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 35: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/35.jpg)
Light and PhotosynthesisLight and Photosynthesis
![Page 36: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/36.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 37: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/37.jpg)
PhotosynthesisPhotosynthesis
Uses photons to eject electrons from the trap Uses photons to eject electrons from the trap molecules in photosystems I and IImolecules in photosystems I and II
Thus, the presence of light affects Thus, the presence of light affects photosynthesisphotosynthesis
![Page 38: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/38.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 39: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/39.jpg)
MethodologyMethodology
![Page 40: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/40.jpg)
Hydrilla setupHydrilla setup
Bubbles came out from the Bubbles came out from the shoot when the setup was shoot when the setup was exposed to bright lightexposed to bright light
![Page 41: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/41.jpg)
Coleus setupColeus setup
Pigments being Pigments being extracted using 95% extracted using 95% ethanolethanol
Coleus leaf starts to Coleus leaf starts to lose its greenish colorlose its greenish color
![Page 42: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/42.jpg)
Coleus setupColeus setup
IKI dropped to the coleus IKI dropped to the coleus samplesample
IKI is an indicator for the IKI is an indicator for the presence of starchpresence of starch
![Page 43: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/43.jpg)
Coleus sampleColeus sample
![Page 44: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/44.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 45: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/45.jpg)
Results and DiscussionsResults and DiscussionsColeus setupColeus setup Bluish coloration on the Bluish coloration on the
uncovered leaf was uncovered leaf was greater compared to that greater compared to that of the covered leafof the covered leaf
Hydrilla setupHydrilla setup Bubbles were released Bubbles were released
upon exposure to upon exposure to sunlightsunlight
![Page 46: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/46.jpg)
Hydrilla setupHydrilla setup
Time intervalTime interval Dim lightDim light Bright lightBright light
1 minutes1 minutes 00 2020
22 00 1717
33 00 1414
44 00 1212
55 00 1212
66 00 1010
77 00 1111
88 00 1414
99 00 1313
1010 00 1212
![Page 47: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/47.jpg)
Hydrilla setupHydrilla setup
1 2 3 4 5 6 7 8 9 10
dim lightbright light
20
17
14
12 12
10 11
1413
12
0 0 0 0 0 0 0 0 0 0
02468
101214161820
minute interval
no. of bubbles per minute
no. of bubbles per minute interval
dim light bright light
![Page 48: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/48.jpg)
Plant transpiration
Introduction
Methodology
Summary and Conclusions
Results and discussion
Light and Photosynthesis
IntroductionMethodology
Summary and Conclusions
Results and discussion
Flowchart
![Page 49: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/49.jpg)
Hydrilla graphHydrilla graph
The number of bubbles seems to be The number of bubbles seems to be diminishing as time passes bydiminishing as time passes by
Dissolved CODissolved CO2 2 may have been used upmay have been used up
No evidence (bubbles) for the occurrence of No evidence (bubbles) for the occurrence of photosynthesis in dim lightphotosynthesis in dim light
![Page 50: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/50.jpg)
Summary and ConclusionSummary and Conclusion
Light is needed in photosynthesisLight is needed in photosynthesis
![Page 51: plant transpiration](https://reader033.vdocuments.site/reader033/viewer/2022052216/5464aff6af795974338b4ab2/html5/thumbnails/51.jpg)