IB Biology Topic B3.1.9 Transpiration as a Consequence of Gas Exchange in a Leaf Revision Notes (SL/HL)

IB Biology Topic B3.1.9 Transpiration as a Consequence of Gas Exchange in a Leaf Revision Notes (SL/HL) | RevisionDojo

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Transpiration Is the Price a Leaf Pays for Letting CO2 In

Definition

Transpiration

Transpiration is the loss of water vapor from the aerial parts of a plant, primarily through tiny pores in the leaves called stomata.

Transpiration is the loss of water vapour from a leaf, and it happens because gas exchange needs open stomata.

It is a consequence of gas exchange, not a separate process the plant chooses to run.
This article focuses on why it happens and the trade-off it creates, not on measuring stomatal density, which is covered in B3.1.10.

Open Stomata Let CO2 In and Water Vapour Out at the Same Time

To photosynthesise, a leaf opens its stomata so carbon dioxide can diffuse in.
The same open pores expose the moist inside of the leaf to drier outside air.
Water vapour then escapes, which is why transpiration is an unavoidable side effect of gas exchange.

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Note

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Excepteur sint occaecat cupidatat non proident

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Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Transpiration Is the Price a Leaf Pays for Letting CO2 In

Definition

Transpiration

Transpiration is the loss of water vapor from the aerial parts of a plant, primarily through tiny pores in the leaves called stomata.

Transpiration is the loss of water vapour from a leaf, and it happens because gas exchange needs open stomata.

It is a consequence of gas exchange, not a separate process the plant chooses to run.
This article focuses on why it happens and the trade-off it creates, not on measuring stomatal density, which is covered in B3.1.10.

Open Stomata Let CO2 In and Water Vapour Out at the Same Time

To photosynthesise, a leaf opens its stomata so carbon dioxide can diffuse in.
The same open pores expose the moist inside of the leaf to drier outside air.
Water vapour then escapes, which is why transpiration is an unavoidable side effect of gas exchange.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic B3.1.9: Transpiration as a Consequence of Gas Exchange in a Leaf Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Transpiration Is the Price a Leaf Pays for Letting CO2 In

Open Stomata Let CO2 In and Water Vapour Out at the Same Time

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Transpiration Is the Price a Leaf Pays for Letting CO2 In

Open Stomata Let CO2 In and Water Vapour Out at the Same Time

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account