Question

Q . what is bacteria ?​

Answer 1

Bacteria

• Bacteria are unicellular prokaryotic microorganisms.
• Some bacteria are useful for humans while some can be harmful.
• They are of four major types: Bacillus, Vibrio, Cocci and Spirilla.

hope it helps .

Answer 2

Explanation:

Bacteria are unicellular organisms belonging to the prokaryotic group where the organisms lack a few organelles and a true nucleus.

E.g., Bacillus, Streptococcus etc.