Read this essay to learn about the theories of structural development of root and shoot apices:- 1. Apical Cell Theory 2. Histogen Theory 3. Tunica-Corpus Theory. Essay # 1. Apical Cell Theory: In cryptogams like algae, bryophytes and pteridophytes the solitary apical cell found to be constantly present leads to the whole process of growth. […]
Structural Development of Root and Shoot Apices | Essay | Botany
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