A farm grows photosynthetic algae called seaweed.
The table shows energy data for the seaweed over one week.
| Energy data | Value |
|---|---|
| Light energy reaching the surface of the water | 75 000 kJ |
| Proportion of this light energy reaching the seaweed | 60% |
| Chemical energy stored in new dry biomass | 600 kJ |
Calculate the percentage of the light energy reaching the seaweed that is stored in new dry biomass.
Explain how light energy that reaches the seaweed becomes stored in new biomass, and why most of the light energy is not stored.
68 exam-style questions on AQA GCSE Biology 4.1 Photosynthesis, covering 4.1.1 Photosynthetic reaction, 4.1.2 Rate of photosynthesis, and 4.1.3 Uses of glucose from photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.