Three Domains Of Life
1. What are the major characteristics of each of the three domains of life? Why do some researchers believe that the Kingdom Protista should be split into more than one kingdom? In the early days of biology, all organisms were classified as either plants or animals. Single-celled eukaryotic organisms such as algae and Paramecium were assigned to one of the kingdoms according to whether they are photosynthetic or not. Fungi and prokaryotes were grouped with plants, because fungi are sedentary and prokaryotes have cell walls.
A five-kingdom scheme was devised because some organisms don't fit well into a two-kingdom system of classification. The simple cells of prokaryotes set them apart in their own kingdom, Monera. Organisms in the other
A five-kingdom scheme was devised because some organisms don't fit well into a two-kingdom system of classification. The simple cells of prokaryotes set them apart in their own kingdom, Monera. Organisms in the other