Chapter 18-1 .............................................Name __________________________________
1. How man species have scientists identified? _________
2. To study the _________________________ of life, biologists use a
___________________________ system to name organisms and group them in a logical
manner.
3. In a discipline called ___________________________, scientists classify organisms and
assign each a name.
4. What is the scientific name for a cougar (fig 18-1) __________________________________
5. How does the name "buzzard" differ depending on what country you are from?
________________________________________________________________________
6. What two languages are used in the scientific naming of organisms?
______________________
7. The two-part naming system used today is called
_____________________________________
8. What type of animals are found in the genus Ursus
__________________________________
9. Linneaeus's system of classification has how many levels? __________
10. Bears are classified in the same ORDER as what other types of animals (name 2)
_________________________________ What is the name of the order?
___________________________________
11. Name one characteristic of animals found in the class Mammalia
_________________________
12. What is the largest category in Linaeus's system?
__________________________________
13. See figure 18-5, answer True or False to the following
__________ A polar bear is more closely related to a black bear than it is to a panda.
__________ Squirrels and snakes belong to the Class Mammalia.
__________ Foxes and pandas belong to the same Kingdom.
__________ Sea stars and squirrels belong to the same Phylum.
18-2 Modern Evolutionary Classification
1. See Fig 18-6--- Based on appearance alone, which is more similar:
[ barnacles and limpets] or [ barnacles and crabs] (underline pair)
2. What is phylogeny?
_____________________________________________________
3. The strategy of grouping organisms based on their evolutionary history is called ______________________
classification.
4. Based on evolutionary classification, which pair is more similar:
[ barnacles and limpets] or [ barnacles and crabs] (underline pair)
5. Name two characteristics that barnacles share with crabs: ________________________________________
6. Characteristics that appear in recent parts of a lineage but not in its older members are called
____________________________ characters.
7. What is a cladogram? __________________________________________________________________
8. Name a gene that both humans and yeast both have: ___________________________________________
9. This gene is evidence that humans and yeast share a common ____________________________________
10. What peculiar behavior is found only in storks and american vultures? ______________________________
11. DNA evidence indicates that the american vulture is more closely related to a stork than to an
______________________________________
12. A ______________________ clock is used to estimate the length of time that two organisms have
been evolving independently.
13. This model relies on measuring the number of ________________________ that have occurred in DNA.
18-3 Kingdoms and Domains
14. What were the two kingdoms that were proposed by Linnaeus? __________________________________
15. List the six kingdoms used in modern classification: ____________________________________________
_______________________________________________________________________________________
16. A domain is [ larger / smaller ] than a kingdom.
17. What domain includes plants, animals, protists and fungi? _______________________________________
18. Members of the Domain __________________________ live in extreme environments.
19. The domain Eukarya constists of all the organisms that have a ___________________________________.
20. What do members of the Kingdom Fungi eat? _______________________________________________
21. Name a unicellular fungi: _______________________________
22. What kingdom contains multicellular autotrophic organisms? __________________________________
23. What does the term "nonmotile" mean? _________________________________________________
24. What kingdom contains multicellular heterotrophic organisms? _________________________________
25. See Fig 18-13 - Which domain includes organisms from more than one kingdom? ___________________