BRAINCAKEGas Exchange in Leaves
The gas exchange system of each species depends on environmental conditions, size, movement and energy consumption.
Plants require carbon dioxide for photosynthesis. Oxygen produced by photosynthesis may be used in respiration and carbon dioxide produced in respiration may be used in photosynthesis. This depends on the balance of photosynthesis and respiration.
In the dark when photosynthesis is not occurring, oxygen is taken up by the plant.
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Key terms in this lesson
- diffusion
- The net passive movement of molecules or ions from a region of higher concentration to a region of lower concentration, down a concentration gradient.
- species
- A group of organisms with similar characteristics that can interbreed to produce fertile offspring.
More in Exchange of Gases
- Limitations of the Tracheal System
- Gas Exchange in Fish
- Structure of the Gills
- Counter Current Exchange
- Stomata
- Limiting Water Loss in Insects
- Limiting Water Loss in Plants
- The Human Gas Exchange System
All 28 lessons in Exchange of Gases · All AQA AS-level Biology topics