Chapter 20: Self-Quiz It is possible to imagine the various levels of taxonomic classification as a kind of "family tree" for an organism. If the kingdom is analogous to the trunk of the tree, what taxonomic category would be analogous to the large limbs coming off that trunk? class family order phylum or division subfamily The more taxonomic categories that are shared by two organisms, the more closely they are related in an evolutionary sense. Which biologist's work led to this insight? Aristotle Darwin Linnaeus Whittaker Pauling Which of the following criteria could not be used to determine how closely related two different organisms are? similarities in the presence and relative abundance of specific molecules DNA hybridization the presence of homologous structures developmental stages occurrence of both organisms in the same habitat Which of the following habitats appears to have the greatest number of species? the sea floor deserts tropical rain forests grasslands mountaintops What organisms are considered plants by some taxonomists and protists by others? algae fungi mosses archaebacteria diatoms An organism is described to you as having many nuclei-containing cells, each surrounded by a cell wall of chitin and absorbing its food. In what kingdom would you place it? Plantae Protista Animalia Fungi Monera The science of placing organisms into categories based on evolutionary similarities is called taxidermy gradualism preadaptation taxonomy biology Classically, most taxonomic classification has been based on ________ similarity. DNA cytochrome c enzyme behavioral morphological The binomial system for naming organisms is given credit to which ofthe following biologists? Carolus Linnaeus Charles Darwin Aristotle Robert Whittaker Gregor Mendel What significant change came about due to Darwin's evolutionary theory, with respect to the taxonomic categories of organisms? Darwin's theory of natural selection has had no effect on taxonomy. Taxonomic categories are now considered to reflect the evolutionary relationships of organisms. Darwin described the kingdoms, which include all organisms that we use today. The relationships between organisms became completely known, and many species were renamed. Taxonomists no longer consider anatomical similarity in classifying organisms. What is the name of the newly proposed kingdom of classification of species? viruses humans marsupials cyanobacteria archaebacteria At the present, how many species are believed to exist on Earth? 7,000 to 10,000 approx. 100,000 over 500,000 between 5 million and 30 million approx. 1 million If two organisms are members of the same class, they must also be members of the same kingdom phylum order genus a and b Which kingdom contains mostly unicellular eukaryotic organisms? Monera Protista Animalia Fungi Plantae Classification based on DNA hybridization is based on the idea that: Closely related organisms have the same number of chromosomes. Cosely related species can form hybrid offspring. DNA of closely related organisms sticks together better than that of distantly related organisms. a and c all of these Electrophoresis is defined as a technique that determines biochemical similarities among groups of organisms a biochemical technique that separates molecules according to their charge and molecular weight a means of determining evolutionary relationships a and b all of these Designed in cooperation with Andrew Stull and Steven Brunasso. Last Update - July 25, 1997 © Prentice-Hall, Inc. A Simon & Schuster Company Upper Saddle River, New Jersey 07458 Legal Statement
Designed in cooperation with Andrew Stull and Steven Brunasso. Last Update - July 25, 1997
Last Update - July 25, 1997
