Solution

Shoot-apex protected by Primordial leaves. Plants pro Primordia developments in plants is critical to the proper positioning and development of plant organs.duce both leaf and flower primordia cells at the shoot apical meristem. Leaf primordia are a group of cells that will form into new leaves. These new leaves form near the top of the shoot and resemble knobby outgrowths or inverted cones.
Therefore, the correct answer is option D.