Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with...

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Cross Section of a Leaf

Transcript of Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with...

Page 1: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Cross Section of a Leaf

Page 2: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Stoma Open vs. Closed Open – w/light & when guard cells filled

with water

Closed – w/o light & when guard cells lacking water (dehydrated)

Why is it important to have stomata open?

Closed vs. Open

Page 3: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Stomata Open vs. Closed Water No Water

Light Dark

Page 4: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

How many stomata?

High light: more stomataLow light: less stomata (less photosynthesis)

Dicots (Webbed veins) more stomata lower leafMonocots (Parallel veins) same amount both sidesWater plants: none on bottom, always openDesert: limited stomata, open at night (adaptation)

Page 5: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Why is it important to have stomata open? GAS EXCHANGE for photosynthesis!

Page 6: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Capillarity Action/Transpiration Cohesion &adhesion

draw water - capillary action.

Water travels from roots, up stem & throughout leaves via xylem

Water enters the guard cells (Ψ)

Water evaporates to atmosphere (transpiration)

Page 7: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

How Does Osmosis determine if the Stomata are open or

closed?

Page 8: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Osmosis due to hypertonic and hypotonic environments!

Page 9: Cross Section of a Leaf. Stoma Open vs. Closed Open – w/light & when guard cells filled with water Closed – w/o light & when guard cells lacking water.

Guard Cells/Stomata


Compartments and Transport - philipdarrenjones.com ... · Absorp+on of Water and Minerals by Root Cells ... • called xylem sap ... Guard cells turgid/Stoma open Guard cells flaccid/Stoma

Compartments and Transport - philipdarrenjones.com ... · Absorp+on of Water and Minerals by Root Cells ... • called xylem sap ... Guard cells turgid/Stoma open Guard cells flaccid/Stoma

Role of Calcium in Signal Transduction of Commelina Cells act in guard cell signal transduction. Our demonstration that release of IPs from its caged form in guard cells mobilizes

Role of Calcium in Signal Transduction of Commelina Cells act in guard cell signal transduction. Our demonstration that release of IPs from its caged form in guard cells mobilizes

Plant Systems - sapgrp.com · Each stoma is surrounded by two special epidermal cells called the : guard cells. These special cells respond to the environmental conditions by opening

Plant Systems - sapgrp.com · Each stoma is surrounded by two special epidermal cells called the : guard cells. These special cells respond to the environmental conditions by opening

TRIUMF prototype status - agenda.infn.it · Overview 32 active cells plus border cells & guard wire! Square 9 mm half-cell.! » other options are possible! 2700 mm length to check

TRIUMF prototype status - agenda.infn.it · Overview 32 active cells plus border cells & guard wire! Square 9 mm half-cell.! » other options are possible! 2700 mm length to check

PowerPoint Presentationpharmasy.weebly.com/uploads/3/7/3/0/37303361/isapghul_leaf_bark_root.pdf · But the guard cells are covered by three subsidiary cells, of which one is markedly

PowerPoint Presentationpharmasy.weebly.com/uploads/3/7/3/0/37303361/isapghul_leaf_bark_root.pdf · But the guard cells are covered by three subsidiary cells, of which one is markedly

Agrobacterium tumefaciens does not transform guard cells in Nicotiana benthamiana

Agrobacterium tumefaciens does not transform guard cells in Nicotiana benthamiana

Actin Filaments in Mature Guard Cells Are Radially ... · cyanate-phalloidin into living guard cells of Commelina communis ... 'This work was supported by a nondirected research fund,

Actin Filaments in Mature Guard Cells Are Radially ... · cyanate-phalloidin into living guard cells of Commelina communis ... 'This work was supported by a nondirected research fund,

Nerve cells & guard cells

Nerve cells & guard cells

UNIT 3: CELLS Structure and Function - Weeblymrpbiology.weebly.com/uploads/2/7/5/6/2756971/pre_ap_cells... · cells onion Epidermal Cells oot hair Root cell Guard Cells . vacu o lasm

UNIT 3: CELLS Structure and Function - Weeblymrpbiology.weebly.com/uploads/2/7/5/6/2756971/pre_ap_cells... · cells onion Epidermal Cells oot hair Root cell Guard Cells . vacu o lasm

Functional Proteomics of Arabidopsis thaliana Guard … · Functional Proteomics of Arabidopsis thaliana Guard Cells ... and in each case ... Functional Proteomics of Arabidopsis

Functional Proteomics of Arabidopsis thaliana Guard … · Functional Proteomics of Arabidopsis thaliana Guard Cells ... and in each case ... Functional Proteomics of Arabidopsis

The John of Gaunt School Year 11 Subject Revision Handbook · Subject Revision Handbook . ... Transpiration – role of stomata, guard cells, xylem & root hair cells Translocation

The John of Gaunt School Year 11 Subject Revision Handbook · Subject Revision Handbook . ... Transpiration – role of stomata, guard cells, xylem & root hair cells Translocation

ALA-Induced Flavonols Accumulation in Guard Cells Is ... into guard cell signaling. Keywords: abscisic acid (ABA), 5-aminolevulinic acid (ALA), flavonol, hydrogen peroxide, stomatal

ALA-Induced Flavonols Accumulation in Guard Cells Is ... into guard cell signaling. Keywords: abscisic acid (ABA), 5-aminolevulinic acid (ALA), flavonol, hydrogen peroxide, stomatal

Parts List Frame and Drum Assembly...1. Keep drum guard closed. 2. Always keep guard lifter connected. 3. Keep drum in upright, mixing position. 4. Spray mixer with water before mix

Parts List Frame and Drum Assembly...1. Keep drum guard closed. 2. Always keep guard lifter connected. 3. Keep drum in upright, mixing position. 4. Spray mixer with water before mix

Actin Filaments of Guard Cells Are Reorganized in Response ...€¦ · Plant Physiol. (1 997) 11 5: 1491-1 498 Actin Filaments of Guard Cells Are Reorganized in Response to Light

Actin Filaments of Guard Cells Are Reorganized in Response ...€¦ · Plant Physiol. (1 997) 11 5: 1491-1 498 Actin Filaments of Guard Cells Are Reorganized in Response to Light

Open Vs Closed Circulatory System. Open Open Open ended vessel which blood leaves Blood flows around cells Enters heart through openings Closed Closed.

Open Vs Closed Circulatory System. Open Open Open ended vessel which blood leaves Blood flows around cells Enters heart through openings Closed Closed.

No-Gi Closed Guard Strategic Outline

No-Gi Closed Guard Strategic Outline

Safety gate monitoring and guard locking with PSENmlock · 3.1.1. Monitoring of guard locking and safety gate For the machine to start, the safety gate must be closed and guard locking

Safety gate monitoring and guard locking with PSENmlock · 3.1.1. Monitoring of guard locking and safety gate For the machine to start, the safety gate must be closed and guard locking

Epidermis-II. Guard Cells in Cucumber Stomata Guard cells.

Epidermis-II. Guard Cells in Cucumber Stomata Guard cells.

Guard Cells Integrate Light and Temperature Signals to ... · Guard Cells Integrate Light and Temperature Signals to Control Stomatal Aperture1[OPEN] Kalliopi-Ioanna Kostaki,a Aude

Guard Cells Integrate Light and Temperature Signals to ... · Guard Cells Integrate Light and Temperature Signals to Control Stomatal Aperture1[OPEN] Kalliopi-Ioanna Kostaki,a Aude

Microtubules of Guard Cells are Light Sensitive of Guard Cells are Light Sensitive Maoz Lahav 1, Mohamad Abu-Abied 1, Eduard Belausov , Amnon Schwartz 2 and Einat Sadot 1, 3 1 The

Microtubules of Guard Cells are Light Sensitive of Guard Cells are Light Sensitive Maoz Lahav 1, Mohamad Abu-Abied 1, Eduard Belausov , Amnon Schwartz 2 and Einat Sadot 1, 3 1 The