Plant source–sink relationships, phloem loading and unloading, sieve-element transport, pressure-driven bulk flow, and regulatory context.
Visual lesson 01
Stem cross-section
Identify epidermal, cortex, vascular, and pith regions in a simplified cannabis stem cross-section.
Interactive academic visual
Stem cross-section
Simplified dicot stem organization from epidermis to pithEpidermis
The outer tissue protects the stem surface and interfaces with the environment.
Knowledge check
PracticeCan you explain what the visual is showing?
Where are xylem and phloem found in a simplified stem cross-section?
Track this lesson
Mark the lesson complete when you are comfortable with the visual, observations, and system context.
Evidence & further reading
Sources connected to this lesson
These references support specific biological, diagnostic, environmental, or process concepts used in this lesson. They are not a substitute for crop-specific testing or local regulatory guidance.Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
System context