missalyssa1901
2009-01-16 14:38:34 UTC
A. kingdom, species, class order, family, genus, phylum.
B. kingdom, phylum, class, order, family, genus, species.
C. phylum, kingdom, family, class, order, genus, species.
D. species, genus, kingdom, family, order, class, phylum.
2. Which of the following taxa would generally contain the most members?
A. order
B. species
C. phylum
D. class
3. One limitation of the Linnaean classification system is that it
A. allows scientists to discuss organisms.
B. is based on physical characteristics alone.
C. organizes organisms into groups.
D. does not use organisms' common names.
4. In a cladogram, what represents the most recent common ancestor shared by a clade?
A. a mark by the clade's derived character
B. the overlapping of one clade upon another
C. the longest branch
D. the node where branches meet
5. Cladistics is a classification system based on
A. nomenclature.
B. dichotomous keys.
C. common ancestry.
D. physical characteristics.
6. What do molecular clocks use to measure evolutionary time?
A. dichotomous keys
B. mutation rates
C. physical characteristics
D. binomial nomenclature
7. How many domains are there in the most current tree of life?
A. six
B. five
C. three
D. two
8. The best molecular clock for comparing closely related species is
A. mitochondrial DNA.
B. ribosomal RNA.
C. nuclear DNA.
D. protein.
9. Which of the following lists the three domains accepted by most scientists?
A. Bacteria, Protista, and Eukarya
B. Bacteria, Fungi, and Protista
C. Eukarya, Archaea, and Bacteria
D. Archaea, Prokaryote, and Eukaryote
10. Single-celled prokaryotes that are classified by their ability to survive extreme conditions are
A. fungi.
B. archaea.
C. protists.
D. eukaryotes.
11. On Earth, bacteria are the most _____
A. closely related to plants.
B. closely related to humans.
C. endangered group of organisms.
D. abundant group of organisms.
12. In which of the following situations would a dichotomous key be useful?
A. A hiker wants to determine the type of tree she is looking at.
B. A gardener wants to identify the weed that has invaded his garden.
C. A scientist wants to know if the bug she found on her plant specimen is an aphid.
D. All of the above
13. Two species of dragonflies have a common ancestor. The two species have been separated for a very long time. When examining the species at the molecular level, one would expect to find
A. many differences
B. few differences
C. no differences
D. no similarities
14. The name Canis lupis is an example of
A. a domain and kingdom.
B. one clade.
C. binomial nomenclature.
D. a phylogeny.
15. Which of the following phrases describes a taxon?
A. a group of organisms in a classification system
B. a group of species that share no derived characters with others in a group
C. a group that can breed and produce offspring
D. a group that is larger than a kingdom or a domain
16. The modern classification system is mainly based on
A. mutation rates.
B. common ancestry.
C. physical similarities.
D. binomial nomenclature.
17. In the cladogram in Figure 17.1, what type of information would go in the area labeled B?
A. clades
B. outgroupings
C. common ancestors
D. derived characters
18. The goal of cladistics is to classify species according to
A. the order in which they descended from a common ancestor.
B. their ability to produce offspring.
C. the geological time in which they appeared on Earth.
D. mutations in their DNA.
19. Which of the following uses mutation rates to measure evolutionary time?
A. phylogenies
B. binomial nomenclature
C. molecular clocks
D. clades
20. How many kingdoms are there in the most current tree of life?
A. two
B. five
C. three
D. six