PHYSICAClass 11 Botany simulations · Anatomy of Flowering Plants
Secondary growth and annual rings
Let a dicot tree grow year by year. Cambium adds wide spring wood and narrow, dense autumn wood each year.
What to notice
Each spring–autumn pair forms one annual ring; counting rings estimates the tree’s age.
Key relation
Age ≈ number of annual rings
Try this
Add years and watch the dark heartwood grow in the centre.
What you can change
- Age of tree: 1 to 30 years
- Spring (early) wood per year: 1 to 6 mm
- Autumn (late) wood per year: 0.3 to 2 mm
More in Anatomy of Flowering Plants
See all Class 11 Botany simulations or every Physica simulation.