Monday, 31 October 2011

2.67a Excretion in plants



1. Photosynthesis = Leaf absorbing light energy.
Combines Carbon dioxide + water ---> molecules (i.e Glucose) + Oxygen. In this case Oxygen is a waste molecule. Oxygen is an example of Excretion.

2. Respiration =
Glucose + oxygen ---> ATP + Carbon dioxide + water. The Carbon dioxide is the excretion in this case.

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