Transpiration Essay

755 Words2 Pages

Purpose:
The primary purpose of this experiment was to find out what environmental factors if at all affect the rate of transpiration. Transpiration is the process in plants which water taken from the roots are evaporated at the leaves. For the water to be transported through the plant, surface tension, adhesion and cohesion are important as it holds the water together and attached to other surfaces.
If transpiration is affected by environmental factors, then increasing the wind and light/temperature will have a direct correlation of transpiration rate; furthermore, wind and light/heat combined will affect the rate larger than just one factor by itself.

Procedure: Set up apparatus as shown in the lab manual following protocol doing four …show more content…

All the groups fell in each other’s SD making each rate indistinguishable from each other not being able to determine one is higher than the other.
The control group was done to determine the evaporation rate without the influence of heat and wind. The transpiration rate for the control was -0.10547 ±0.021629 AU and this number is used to determine if the other experimental group had an influence on the transpiration rate.
The wind only group had a transpiration rate of -0.10235 ±0.019416 AU which overlaps the control SD showing no significant difference. Wind could have altered the evaporation rate as it brings airflow moving the produced H2O(g) molecules away from the leafs. Since diffusion rate depends on concentration, this can be a …show more content…

This was expected to have the highest rate due to having multiple factors but there was no significant difference.
Other factors that might be worth investigating might be: altitude/pressure, temperature, and humidity. If the pressure or altitude was changed, it might be easier or harder for the water molecules to evaporate. The temperature of the environment might be controlled to see not the effect of both light and heat but just heat itself. Humidity as mentioned earlier will affect the rate of diffusion as it is a concentration of water of the

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