CELL TYPE CYTOPLASMIC FEATURES CELL WALL FEATURES 3-D GEOMETRY

Collenchyma

 Nucleus 
Vacuolated 
Mitochondria 
Chloroplasts 		 Primary cell wall of variable thickness
Subcategories recognized on basis of location of thickest region of cell walls:
 
Subcategory ThickestCell Wall Location
Lamellar Tangential Walls
Angular At edges where two cell wall faces meet
Lacunar Next to intercellular spaces
 

 
Transverse Polygonal
Longitudinal  Elongated with tapering ends or less elongated