Photosynthesis Limiting Factors Graph Analysis

Year 10 Biology Understanding factors that affect photosynthesis rate Interpreting scientific graphs and data

Starter: Photosynthesis Recall Quiz

What are the reactants of photosynthesis? What are the products of photosynthesis? Where does photosynthesis occur in plant cells? Write the word equation for photosynthesis

Factors Affecting Photosynthesis Rate

Light intensity - more light energy available for reactions Carbon dioxide concentration - raw material for glucose production Temperature - affects enzyme activity Chlorophyll availability - determines light absorption capacity

Understanding Limiting Factors

The factor in shortest supply limits the overall rate of photosynthesis

Light Intensity Graph Analysis

Graph Interpretation Practice

{"left":"Temperature graph shows rate increasing then decreasing after optimal point\nCO2 concentration graph shows plateau when CO2 is no longer limiting","right":"Light intensity graph shows initial rise then plateau\nAll graphs demonstrate limiting factor principle"}

Real Data Challenge

Scenario: Greenhouse in winter with artificial lights Data shows photosynthesis rate at different CO2 levels Your task: Identify the limiting factor Explain your reasoning using the graph

Plenary: Apply Your Knowledge

A plant is placed in bright sunlight but in a sealed container with limited CO2. Which factor will limit photosynthesis and why?