(a) Rod

(b)

(c) Binary fission.

(d) Any of the following factors:

• Temperature
• Oxygen concentration
• pH
• External solute concentration
• Pressure.

(e) Any of the following bacteria:

• Staphylococcus aureus
• Helicobacter pylori
• Streptococcus
• Salmonella.

(f)
(i)

(ii) Z: Death or Decline Phase