Which one is most primitive ?

Correct option is B

Correct Answer: B. Bacteria

Explanation:

• Bacteria are the most primitive life forms, belonging to the prokaryotic group.

• They lack a true nucleus and membrane-bound organelles, making them simpler and older than other listed organisms.

Information Booster:

• Bacteria are believed to be among the earliest forms of life on Earth, existing for over 3.5 billion years.

• They reproduce asexually by binary fission.

Additional Information:

• A. Cyanobacteria

  • Though also prokaryotic, they are a specialized subgroup of bacteria that perform photosynthesis, evolved later.

• C. Fungi

  • Eukaryotic and more complex than bacteria.

• D. Protozoa

  • Also eukaryotic single-celled organisms, more evolved than bacteria.