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B6: Photosynthesis (Translocation (3 factors of translocation (Light…
B6: Photosynthesis
Translocation
Transports sucrose around the plant.
3 factors of translocation
Light intensity
Causes the stomata to open and evaporate the water so more water is taken up to replace it.
Air movement
More air movement increases transpiration
Temperature
Higher temperature speeds up the process.
A potometer measures translocation.
How to work out
Distance moved divided by time taken
Photosynthesis
Reactants
CO2
Water
Products
Oxygen
Glucose
Requires light energy
Transpiration
When water and mineral ions are transported through the plant
More air movement means transpiration increases
Phloem
Transports sucrose around the plant
Contain sieve cells to transport substances.
Xylem
Transports water and minerals through the plant
Lignified dead cells that has no cytoplasm which gives water space to move through.
Equation
Carbon dioxide + Water -> Glucose + Oxygen