Multiple choice

The abscission layer is formed by

  1. cambial cells

  2. sclerenchymatous cells

  3. aerenchymatous cells

  4. parenchymatous cells

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

During leaf abscission, parenchyma cells in the petiole base form a specialized separation layer. These cells undergo precise biochemical changes, with cell walls weakening to create a clean break point allowing leaves to detach without damaging the plant.