A) epidermis
B) cortex
C) pericycle
D) pith
Correct Answer: B
Solution :
Hanstein 1868 recognised three embryonic zones in shoot apex and four in root apex and called them as histogen. The histogens are: [a] Dermatogen \[\to \] Epidermis [b] Periblem\[\to \]Cortex [c] Plerome \[\to \]Stele and pith [d] Calyptrogen \[\to \] Root cap (only in root apex)
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