IB Biology Topic C1.3.7 The Effects of Limiting Factors on the Rate of Photosynthesis Revision Notes (SL/HL)

IB Biology Topic C1.3.7 The Effects of Limiting Factors on the Rate of Photosynthesis Revision Notes (SL/HL) | RevisionDojo

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A Limiting Factor Is the One in Shortest Supply, and It Caps the Rate of Photosynthesis

Photosynthesis needs light intensity, carbon dioxide concentration, and a suitable temperature.
The limiting factor is whichever of these is in shortest supply at that moment.
It sets a ceiling on the rate, so raising the other factors does nothing until the limiting one is increased.

Note

At any moment only one factor is limiting, and it is usually the scarcest.
Fix that factor and the rate rises until a different factor becomes limiting.

Light Intensity: Rate Rises Then Plateaus When Another Factor Takes Over

As light intensity increases, the rate rises because more energy is available for the light-dependent reactions.
Beyond a saturation point the line levels off because carbon dioxide or temperature now limits the rate.
1. On a graph of rate against light intensity, the plateau marks where light has stopped being the limiting factor.

Investigating the effects of limiting factors on the rate of photosynthesis

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A Limiting Factor Is the One in Shortest Supply, and It Caps the Rate of Photosynthesis

Photosynthesis needs light intensity, carbon dioxide concentration, and a suitable temperature.
The limiting factor is whichever of these is in shortest supply at that moment.
It sets a ceiling on the rate, so raising the other factors does nothing until the limiting one is increased.

Note

At any moment only one factor is limiting, and it is usually the scarcest.
Fix that factor and the rate rises until a different factor becomes limiting.

Light Intensity: Rate Rises Then Plateaus When Another Factor Takes Over

As light intensity increases, the rate rises because more energy is available for the light-dependent reactions.
Beyond a saturation point the line levels off because carbon dioxide or temperature now limits the rate.
1. On a graph of rate against light intensity, the plateau marks where light has stopped being the limiting factor.

Investigating the effects of limiting factors on the rate of photosynthesis

Open in new tab

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.

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C1.3.7: The Effects of Limiting Factors on the Rate of Photosynthesis Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

A Limiting Factor Is the One in Shortest Supply, and It Caps the Rate of Photosynthesis

Light Intensity: Rate Rises Then Plateaus When Another Factor Takes Over

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

A Limiting Factor Is the One in Shortest Supply, and It Caps the Rate of Photosynthesis

Light Intensity: Rate Rises Then Plateaus When Another Factor Takes Over

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