Question

. Cellular layers from outside to inside in old
dicot stem are
1) Phellem – Phellogen – Phelloderm – Bast
vascular cambium – wood
2) Phellem – phellogen – phelloderm – wood –
vascular cambium – Bast
3) Phellogen – Phellem – Periderm – wood –
vascular cambium – Bast
4) Periderm – Bast – Vascular cambium –
Leptome

Answer 1

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In the anatomy of old dicot stem from outer to inner epidermis, followed cortex, periderm, primary phloem, secondary phloem, vascular cambium, secondary xylem, annual ring, sap wood, heart wood, primary xylem and medulla are present towards the inner side.

So, the correct option is 'Epidermis, phellem, phellogen, phelloderm'.