Number of flagella in diatoms Dinoflagellates and euglenoids are

Explanation

Bacteria are classified into four types based on the number and arrangement of flagella. They are
(1) Monotrichous :- A single polar flagellum is present at one end of Bacterial cell
(2) Lophotrichous :- A tuft of flagella at one pole of the cell.
(3) Amphitrichous :- A single flagellum at each end of the cell.
(4) Peritrichous :- Flagella distributed over the entire cell