Transpiration is a water balance process mediated by stomata opening. Translocation is the transport process of photosynthetic substances from leaves to other tissues.
What is transpiration?
Transpiration is a water balance process.
Through stomata opening and closure (which depends on how hydrated the plant is) water vapor is expelled from the leaves.
- If the plant is dehydrated, stomata close.
- If it is not dehydrated, it opens.
By limiting water exit, stomata allow more water molecules to be available for light reaction processes when the plant is dehydrated.
The equation to calculate transpiration is as follows,
E = Gv (Cvs - Cva)
Where,
- E is transpiration.
- Gv is the total vapor water conductance.
- Cvs is the water concentration inside the leave.
- Cva is the air water concentration.
What is translocation?
Translocation is a fast and dynamic process through which photosynthetic products are transported from the leaves to other tissues of the plant to be used or stored.
This transport is done by the phloem cells through active transport or osmosis (depending on the substance).
The translocation of elements from the leaves to the roots is fast.
In conclusion,
- The chemical equation for transpiration is E = Gv (Cvs - Cva).
- Translocation is the movement of photosynthetic products from leaves to other plant tissues.
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