Biology, asked by acerttv2020, 6 months ago

Describe the histogen theory with suitable diagram.

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Answered by TriviaTramp
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Analysis has led to the histogen theory, which proposes that the three principal tissues of the root—vascular cylinder, cortex, and epidermis—originate from three groups of initial cells, or histogens, in the apical meristem—plerome, periblem, and dermatogen respectively.

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