Read the following statements regarding the anatomy of a dicotyledonous root: Statement I: The innermost layer of the cortex is the endodermis. Statement II: Root hairs are unicellular elongations of the epiblema. Statement III: Lateral roots originate exogenously from the epiblema. Statement IV: Vascular cambium in dicot roots is partly primary and partly secondary in origin. How many of the above statements are cor

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Statement I is correct: The cortex consists of several layers of thin-walled parenchyma cells, and its innermost layer is the endodermis. Statement II is correct: The outermost layer of the root is the epiblema. Many of its cells protrude in the form of unicellular root hairs. Statement III is incorrect: Lateral roots have an endogenous origin as they arise from the pericycle, which is located deep within the root. Statement IV is incorrect: In dicot roots, the vascular cambium is completely secondary in origin. It