Blue light response of azure bluets
Azure bluets (Houstonia caerulea) display a phototropic response by bending toward the light.
Source
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"OpenStax College, Plant Sensory Systems and Responses. October 17, 2013."
http://cnx.org/content/m44711/latest/Figure_30_06_02.jpg
OpenStax CNX
CC BY 3.0.
