How Plants Attract Bodyguards

Lots of plants make nectar to attract pollinators, but some make special, extra nectar pots outside their flowers to feed their bodyguards.

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Sources:
http://www.ncbi.nlm.nih.gov/pubmed/19143997
http://www.bashanfoundation.org/heil/heilngeneration.pdf
http://www.researchgate.net/profile/Suzanne_Koptur/publication/238227824_Experimental_evidence_for_defense_of_Inga_(Mimosoideae)_saplings_by_ants/links/0a85e53c5409c8505c000000.pdf
http://www.ncbi.nlm.nih.gov/pubmed/23104672
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2435.2006.01071.x/abstract
http://www.ncbi.nlm.nih.gov/pubmed/23087129
http://www.jstor.org/stable/2425282

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