One of the basic problems with Copeland's four-kingdom system was
A) it did not classify fungi.
B) it placed all single-celled organisms in one kingdom.
C) it did not consider algae protists.
D) basic differences in the mode of nutrition existed within his Kingdom Protoctista.
E) it did not distinguish organisms with prokaryotic cells from those with eukaryotic cells.

Question

Quizplus · Accepted Answer

Copeland's four-kingdom system grouped organisms into Protoctista, Plantae, Animalia, and Monera. A significant issue with this classification was that it placed organisms with fundamentally different modes of nutrition within the same kingdom, Protoctista, which included both photosynthetic algae and heterotrophic protozoans.

One of the Basic Problems with Copeland's Four-Kingdom System Was