B1.4.4 - Interactions of Limiting Factors in Photosynthesis

Photosynthesis

Biochemical process converting light into glucose.

Limiting Factor

Condition restricting the rate of photosynthesis.

Light Intensity

Amount of light energy available for photosynthesis.

Carbon Dioxide (CO₂)

Raw material needed for glucose production.

Temperature

Affects enzyme activity in photosynthesis.

RuBisCO

Key enzyme in the Calvin cycle.

Optimal Conditions

Ideal levels for maximum photosynthesis rate.

Interaction of Factors

Limiting factors influence each other's effects.

Photosynthesis Rate

Speed at which glucose is produced.

High CO₂ Impact

Boosts photosynthesis at elevated temperatures.

Low Light Impact

Limits photosynthesis despite high CO₂ availability.

Enzyme Denaturation

Loss of enzyme function at high temperatures.

Shaded Forest Example

High CO₂ but low light limits photosynthesis.

Greenhouse Example

Insufficient CO₂ limits photosynthesis despite light.

Cold Conditions Effect

Low temperatures slow down photosynthesis rate.

Desert Environment Effect

High light but extreme heat halts photosynthesis.

Calvin Cycle

Process using CO₂ to produce glucose.

Graphical Representation

Visualizes interactions between light, CO₂, and temperature.

Photosynthesis Plateau

Rate stabilizes when one factor becomes limiting.

Controlled Greenhouse Environment

Optimizes light, CO₂, and temperature for growth.

Maximum Photosynthesis

Achieved when all factors are at optimal levels.

Practical Applications

Balancing factors to maximize crop yields.