Bacillus and cocci:-

Definition:-

Compound the microscopic is known as cellular morphology.

Bacillus:-

As suggested by Muller the rid is known as bacillus.In various species of rod shaped bacteria the cylindrical may be as long as 20 micro meter or as short as 0.5 micro meter.

Coccus:-

A spherically shaped bacterium is known as coccus  a termed derived from Greek Kokkos men Berry.Cocci tend to be quite small being only 0.5 micro meter to 1.0 micro meter in diameter.