1.11.2 The Linnaean System: Still Changing

Question 1

note

Answer 1

• In 1969 a 5-kingdom system was established and considered sufficient for the classification of all organisms.
• Growing knowledge about evolutionary relationships has prompted a need to change the 5-kingdom system.
• In response to this need, both an 8-kingdom system and a 3-domain system have been established with proponents on each side.
• The 8-kingdom system divides the kingdom
  Protista further into three separate kingdoms
  and the kingdom Monera into two separate
  kingdoms.
• The 8-kingdom system divides the kingdom
  Protista further into three separate kingdoms
  and the kingdom Monera into two separate
  kingdoms.

Question 2

The move towards a three-domain system reflects

Answer 2

• A means of classifying prokaryotes that more accurately reflects evolutionary history.

Question 3

True or false?
Archaeans share a more recent common ancestor with Bacteria than Eukaryotes, since both Archaeans and Bacteria both lack a nucleus.

Answer 3

• false

Question 4

Which of the following is not a part of the five-kingdom system of classification?

Answer 4

• eubacteria

Question 5

The earliest classification schemes recognized two kingdoms of organisms

Answer 5

• plants and animals

Question 6

True or false?

It’s been proposed to split the kingdom Monera into three separate kingdoms: Archaezoa, Protista, and Chromista.

Answer 6

• false