Compare leaf area, active shoot growth, root growth, flowering stage, seed development, and recent pruning or damage.
Visual lesson 06
Source-sink integration
Connect mature exporting leaves with changing sinks such as expanding shoots, roots, flowers, and developing seeds to understand how phloem allocation shifts through development.
Whole-plant allocation
Interactive concept mapSources export; sinks compete for current assimilate
→
→
Source tissues
Mature photosynthetic leaves can export sugars after meeting their own metabolic needs.
Source and sink are functional roles, not permanent organ labels. The balance changes with development and plant condition.
Knowledge check
PracticeCan you explain what the visual is showing?
Which statement best describes source–sink integration in the vascular system?
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.Plant source–sink relationships, phloem loading and unloading, sieve-element transport, pressure-driven bulk flow, and regulatory context.
Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
System context