Sunday 30 October 2011

2.67 a

recall the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of  a leaf

considering the process of photosynthesis -combining carbon dioxide and water to create C(6) H (12) O(6) and O(2) <-- waste product.
1. excretion = release of metabolic waste
2. respiration = (C(6) H(12) O(6)) aerobic respiration O(2) + C(6) H(12) O(6) --> ATP (the product\0 --> waste--> CO(2) + O(2). <-- excretion.
plants excrete-- oxygen and carbon dioxide. 

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