Sunday, 30 October 2011

2.67a - Excretion in plants

Photosynthesis - leaf absorbs light energy and in this process it combines CO2 with water to form glucose and oxygen (given off as waste molecules)

CO2 + H2O ---> C6H12oO6 + O2 -> excretion

Respiration - glucose and oxygen (aerobic resp.) through enzyme reactions the glucose is broken down and forms ATP , water and carbon dioxide (as waste)
- Carbon dioxide is a metabolic waste - excretion

C6H12oO6 + O2 ---> ATP + H2O + H2O

Glucose molecule is broken down and energy is used to form ATP and get the waste of carbon dioxide and water given off.
The waste process is called Excretion.

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