Root Anatomy

Botany professor Dr. Joyce Onyenedum explores the development, anatomy, and function of plant roots—the hidden systems behind plant resilience. Roots anchor plants in the soil, absorb water and nutrients, and exhibit diverse anatomical adaptations that support survival across environments. This video examines how root structure, development, and evolution contribute to plant success, from cellular organization to extreme ecological adaptations. Topics covered: 00:00 Root function and evolutionary origins 01:06 The root blueprint: four developmental zones from tip to maturity 02:47 Assembling the protostele 03:24 Expanding the root system through lateral roots 04:05 Extreme root anatomy: mangroves 04:48 Extreme root anatomy: epiphytes 05:15 Extreme root anatomy: cycads 05:40 Recap