Page 82 - PG 101-Course notes مذكرة النظري 24-25 with spec

Medicinal plants (PG 101) Level 1 Clinical Pharmacy-PharmD

Anatomy of primary plant organs

1-Root Structure

• A root consists of a central vascular cylinder (stele) surrounded by ground tissue
(cortex), and the epidermis (piliferous layer, epiblema).

• Root hairs provide a large surface area through which water & minerals/nutrients
enter the plant.

• These new cells are covered by the root cap that protects the root as it forces its way
through the soil.

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