Question

A: The graphic shows a a six-kingdom model published by Thomas Cavalier-Smith in 1998, which has since been revised to a seven kingdom system. Some of the changes made by Cavalier-Smith were due to advances in the electron microscope that allowed for the discovery that some chloroplasts were found in the endoplasmic reticulum rather than the cytoplasm. Each statement suggests a way the 6-kingdom system by Cavalier-Smith differs from the kingdom system, except: A) Cavalier-Smith's model adds the Kingdom Chromista. B) Cavalier-Smith's model no longer separates prokaryotes and eukaryotes. C) Cavalier-Smith's model combines Archaebacteria and Eubacteria into one kingdom, Bacteria. D) Cavalier-Smith's model reorganizes eukaryotes into five kingdoms instead of the 4 commonly accepted.

Answer 1

B) Cavalier-Smith's model no longer separates prokaryotes and eukaryotes.

Each statement suggests a way the 6-kingdom system by Cavalier-Smith differs from the kingdom system, except: Cavalier-Smith's model no longer separates prokaryotes and eukaryotes.

The Cavalier-Smith model still divides kingdoms into prokaryotes and eukaryotes, although the uses the classification Empire rather than Domain.

Answer 2

Answer: B) Cavalier-Smith's model no longer separates prokaryotes and eukaryotes.

Although the Cavalier-Smith's model has introduced several new changes to the kingdom model, it still separates the prokaryotes and eukaryotes into two separate empires (Prokaryota and Eukaryota).