histogen

histogen

[his-tuh-juhn, -jen]
noun Botany.
a region in a plant in which tissues differentiate.

Origin:
1920–25; histo- + -gen

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World English Dictionary
histogen (ˈhɪstəˌdʒɛn)
 
n
corpus See tunica (formerly) any of three layers in an apical meristem that were thought to give rise to the different parts of the plant: the apical meristem is now regarded as comprising two layers

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