Characteristics of Life
Vocabulary
Evolution
Cells and Naming
Classification
100
7. An organism's ability to maintain stable internal conditions despite changes in its surroundings is called _______.
Homeostasis
100
1. Organisms that make their own food are called _____.
Autotrophs
100
12. The modern system of classification is based on the theory of __________, which was first proposed by Charles Darwin.
Evolution
100
16. In what two ways are the organisms in the table (on our study guide) similar to the organisms in the plant kingdom?
All are multicellular and eukaryotes
100
4. The first word in an organism's scientific name is its ___________.
Genus
200
All living things respond to this.
What is stimuli?
200
10. Each genus of organisms contains one or more __________.
Species
200
17. Which of the organisms in the table (in our study guide) is least similar to the others?
The blue whale is the least similar. All of the others are in the same order, but the blue whale is in a different order.
200
6. A(n) ______ organism is a living thing composed of many cells.
multicellular
200
5. _________ developed a naming system that grouped organisms on the basis of their observable features.
Linnaeus
300
21. How do organisms differ in the ways they obtain their energy source, or food?
Organisms may be autotrophs or heterotrophs.
300
Any of the distinct types of material of which animals or plants are made.
What is tissue?
300
DAILY DOUBLE! 18. Which of the organisms in the table are most similar to a tiger (Panthera tigris)? Explain. 19. Which two organisms have the most similar evolutionary history?
18. The lion is most similar to a tiger, because both are members of the same genus. 19. The gray wolf and the coyote probably have the most similar evolutionary history, since they are members of the same genus. All other members belong to a different genus.
300
20. What are Linnaeus' two major contributions to taxonomy?
1. He placed organisms into groups based on their observable characteristics. 2. He developed the naming system called binomial nomenclature.
300
2. A(n) ________ consists of paired statements about the characteristics of different organisms.
taxonomic key
400
All living things get bigger, or do this.
What is grow?
400
14. What information would you need to know about the spider to help you classify it into a kingdom and domain?
Cell type, its ability to make or obtain its own food, and the number of cells in its body.
400
11. An owl and a bat share the same kingdom and phylum; an owl and a robin share the same kingdom, phylum, and class. The owl and _____________ have more characteristics in common.
Robin
400
22. Use an example to explain why the common names of organisms are sometimes confusing. How can using scientific names help avoid the confusion?
The same organism may have different common names in different places in the country/world. For example, the same animal may be called a woodchuck, groundhog, or whistle pig. An organism has only one scientific name though, and all scientists use the same name for it.
400
8. Biologists find __________ useful because this scientific study gives them much information about an organism based on its classification.
taxonomy
500
All living this must have this in order to survive.
What is water?
500
13. The _______ kingdom is the only kingdom of eukaryotes that contains both autotrophs and heterotrophs, and both unicellular and multicellular organisms.
Protist
500
3. The bones in the wing of a bat are similar to the bones in the flipper of a whale. This information suggests that bats and whales have similar ________ history.
Evolutionary
500
15. Suppose you are using a taxonomic key to identify a spider. What are some physical characteristics of the organism you would need to examine?
Possible answers: The number of legs, the number of body segments, the size of the organism.
500
9. In the modern classification system used by biologists, the broadest level of organization is called a(n) _________.
Domain
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