2.67a Excretion in Plants

Notes


1. DAY Leaf absorbs Light energy by Photosynthesis (metabolic reaction):
-> CO2 + H2O ------> C6H12O6 (glucose) + O2 (gas = waste molecule = excretion)
-> O2 metabolic waste = excreted

2. NIGHT Aerobic Respiration
-> C6H12O6 (glucose) + O2 ---Enzyme reactions (glucose broken down) ---> ATP + CO2 + H20
-> CO2 = metabolic waste = excreted

Excretion = Through stomatal pores