Editing Excretion (section)

=== Plants ===
Green [[plants]] excrete carbon dioxide and water as respiratory products. In green plants, the [[carbon dioxide]] released during respiration gets used during photosynthesis. [[Oxygen]] is a byproduct generated during [[photosynthesis]], and exits through [[stomata]], root cell walls, and other routes. Plants can get rid of excess water by transpiration and [[guttation]]. It has been shown that the leaf acts as an 'excretophore' and, in addition to being a primary organ of photosynthesis, is also used as a method of excreting toxic wastes via diffusion. Other waste materials that are exuded by some plants&nbsp;— [[resin]], saps, [[latex]], etc. are forced from the interior of the plant by hydrostatic pressures inside the plant and by absorptive forces of plant cells. These latter processes do not need added energy, they act passively. However, during the pre-abscission phase, the metabolic levels of a leaf are high.<ref>{{cite journal | vauthors = Ford BJ | title = Even plants excrete | journal = Nature | date = October 1986 | volume = 323 | issue = 6091 | page = 763 | doi = 10.1038/323763a0 | bibcode = 1986Natur.323..763F | s2cid = 4344886 |url=http://www.brianjford.com/wleaf03.htm | doi-access = free }}</ref><ref>{{cite book | chapter = Excretion | title = Encyclopædia Britannica. Encyclopædia Britannica Ultimate Reference Suite.  | location = Chicago | publisher = Encyclopædia Britannica | date = 2010 }}</ref> Plants also excrete some waste substances into the soil around them.<ref>http://www.tutorvista.com/content/science/science-ii/excretion/excretion-plants {{dead link|date=November 2016}}</ref>