Question

Who proposed the three-domain system of classification?

• A. Haeckel
• B. H. Whittaker
• C. John Ray
• D. Carl Woese

Answer 1

The correct option is D

Carl Woese

The correct option is D.

Explanation of correct option:

1. The three-domain classification was proposed by Carl Woese in 1990.
2. The Three Domains were Archae, Bacteria, and Eukaryote while the Six Kingdoms were Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia.

Explanation of incorrect option:

Option A:

1. Three kingdom system was classified by Haeckel which included the new kingdom Protista along with Animalia and Plantae in 1860

Option B:

1. Whittaker proposed the five Kingdom classifications Monera, Protista, Fungi, Animal, and Plantae in 1969.

Option C:

1. John Ray formulated the classification of flowering plants into monocots and dicots

Final Answer: Carl Woese proposed the three-domain system of classification