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Questions and Answers
Scientists assign each kind of organism a universally accepted name in the system known as:
Scientists assign each kind of organism a universally accepted name in the system known as:
Several different classes make up a:
Several different classes make up a:
Which two kingdoms did Linnaeus recognize?
Which two kingdoms did Linnaeus recognize?
Traditional classifications tended to take into account primarily:
Traditional classifications tended to take into account primarily:
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Sometimes organisms that are not closely related look similar because of:
Sometimes organisms that are not closely related look similar because of:
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In an evolutionary classification scheme, species within one genus should:
In an evolutionary classification scheme, species within one genus should:
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Which of the kingdoms in the six-kingdom system of classification was once grouped with plants?
Which of the kingdoms in the six-kingdom system of classification was once grouped with plants?
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Biologists use a classification system to group organisms in part because organisms:
Biologists use a classification system to group organisms in part because organisms:
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The study of organisms requires the use of:
The study of organisms requires the use of:
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A genus is composed of a number of related:
A genus is composed of a number of related:
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Animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class:
Animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class:
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What do all organisms have in common?
What do all organisms have in common?
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Which kingdom contains heterotrophs with cell walls of chitin?
Which kingdom contains heterotrophs with cell walls of chitin?
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The domain that includes the kingdom Eubacteria is:
The domain that includes the kingdom Eubacteria is:
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The domain that contains unicellular organisms that live in extreme environments is:
The domain that contains unicellular organisms that live in extreme environments is:
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The study of organisms requires the use of both _______ and _______ categories of organisms.
The study of organisms requires the use of both _______ and _______ categories of organisms.
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Scientists assign each type of organism a universally accepted name in the system known as ____________ ____________.
Scientists assign each type of organism a universally accepted name in the system known as ____________ ____________.
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In taxonomy, a group at any level of organization is referred to as a ___________.
In taxonomy, a group at any level of organization is referred to as a ___________.
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Have scientists identified and named all organisms?
Have scientists identified and named all organisms?
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In a scientific name, which part is capitalized?
In a scientific name, which part is capitalized?
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What two taxons make up a scientific name?
What two taxons make up a scientific name?
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The second part of a scientific name is unique to each ____________.
The second part of a scientific name is unique to each ____________.
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Before Linnaeus, scientific names were problematic because they were ________________________.
Before Linnaeus, scientific names were problematic because they were ________________________.
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How many categories are in Linnaeus's system?
How many categories are in Linnaeus's system?
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A genus is composed of a number of _____________.
A genus is composed of a number of _____________.
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Several different classes make up a _____________.
Several different classes make up a _____________.
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Which two kingdoms did Linnaeus recognize?
Which two kingdoms did Linnaeus recognize?
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List characteristics of class Mammalia.
List characteristics of class Mammalia.
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What do all organisms have in common?
What do all organisms have in common?
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Similar genes are evidence of ___________ ___________.
Similar genes are evidence of ___________ ___________.
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All organisms in kingdoms Protista, Plantae, Fungi, and Animalia are _____________.
All organisms in kingdoms Protista, Plantae, Fungi, and Animalia are _____________.
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The domain that corresponds to kingdom Eubacteria is _____________.
The domain that corresponds to kingdom Eubacteria is _____________.
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The domain that contains unicellular organisms that live in extreme environments and are without peptidoglycan in their cell walls is _______________.
The domain that contains unicellular organisms that live in extreme environments and are without peptidoglycan in their cell walls is _______________.
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List the 6 kingdoms and give an example of an organism in each kingdom.
List the 6 kingdoms and give an example of an organism in each kingdom.
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What are the 7 taxonomic groups?
What are the 7 taxonomic groups?
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What are the 3 domains and a characteristic of each?
What are the 3 domains and a characteristic of each?
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What are the 6 kingdoms and 2 characteristics of each?
What are the 6 kingdoms and 2 characteristics of each?
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What is the only kingdom without cell walls?
What is the only kingdom without cell walls?
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Only kingdoms with all multicellular organisms?
Only kingdoms with all multicellular organisms?
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Only kingdoms with some multi and unicellular organisms?
Only kingdoms with some multi and unicellular organisms?
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Only kingdoms that are all heterotrophic organisms?
Only kingdoms that are all heterotrophic organisms?
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Only kingdom with all autotrophic organisms?
Only kingdom with all autotrophic organisms?
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Study Notes
Taxonomy and Classification
- Organisms are named using a system called binomial nomenclature, which assigns each organism a universally accepted name.
- Linnaeus identified two kingdoms: Animalia and Plantae.
- Traditional classifications often relied on general similarities in appearance, rather than genetic information.
- Different classes aggregate to form a phylum.
- A single genus includes multiple related species.
Characteristics of Organisms
- Animals classified as Mammalia share traits such as being warm-blooded, having body hair, and producing milk for their offspring.
- All organisms utilize DNA and RNA to transfer genetic information.
- The kingdom Fungi consists of heterotrophs with cell walls made of chitin.
Domains and Kingdoms
- The domain that encompasses Eubacteria is called Bacteria.
- Archaea includes unicellular organisms that thrive in extreme environments and lack peptidoglycan in their cell walls.
- In total, there are six kingdoms:
- Animalia (e.g., fish)
- Plantae (e.g., moss)
- Fungi (e.g., mushrooms)
- Protista (e.g., giant kelp)
- Archaebacteria (e.g., methanogens)
- Eubacteria (e.g., streptococcus)
Taxonomic Hierarchy
- Linnaeus established a seven-category taxonomic framework, which includes:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
- A taxon refers to any group at any level of this classification system.
Characteristics and Grouping
- Distinction among organisms helps avoid redundancy in names, as previously names were in different languages.
- Only Animalia lacks cell walls, while Plantae consists exclusively of autotrophic organisms.
- Kingdoms Plantae and Animalia are unique in containing only multicellular organisms.
- Both Protista and Fungi contain a mix of unicellular and multicellular organisms.
- The kingdoms solely comprising heterotrophic organisms are Fungi and Animalia.
Common Ancestry
- Similar genetic make-up can indicate common ancestry among species, reinforcing evolutionary links.
- Organisms within a genus share a greater genetic relatedness compared to those in other genera.
Studying That Suits You
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Description
Prepare for your Chapter 18 biology test with this set of flashcards. Each card covers key terms and concepts related to classification and taxonomy, aiding in your understanding of the material. Test your knowledge and ensure you're ready for the exam!
