CELL SHAPE
Cells may have diverse shapes such as:
- polyhedral – These are cells with 8, 12, or 14 sides
- spherical – Eggs of many animals
- spindle-shaped – smooth muscle fibres
- elongated – nerve cells
- branched – chromatophores or pigment cells of skin
- discoidal – erythrocytes or red blood cells)
CELL SIZE
The size of cells varies from the very small cells of bacteria ( 0.2 to 5.0 um ) to the very large eggs of the ostrich (18 cm)
