Unit 6 Lesson 6 Classification of Living Things

 Which of the following correctly lists the levels of classification in order?  

• domain, kingdom, genus, species, phylum, class, order, family
• genus, species, domain, kingdom, phylum, class, order, family
• domain, kingdom, phylum, class, order, family, genus, species 
• genus, species, phylum, class, order, family, domain, kingdom

A branching diagram is shown in the following figure.   Based on the diagram, which of the following statements is true?  

• Characteristics that would be listed at point 5 are found in mice, but not in the other organisms.
• Characteristics that would be listed at point 1 are found in all of the organisms shown in the diagram.
• Characteristics that would be listed at point 4 are found in lampreys, perch, and lizards, but not in mice or cats.
• Characteristics that would be listed at point 2 are found in lampreys and perch, but not in the other organisms.

Avery knows that scientists use physical similarities to classify organisms.  She studies the figures of four different organisms.   Which two organisms should Avery related?   

• 1 and 2
• 1 and 3 
• 2 and 3
• 2 and 4

Scientists often use branching diagrams such as the phylogenic tree to show relationships among organisms. The phylogenic tree that follows is based on chemical characteristics of organisms, such as ribosomal RNA (rRNA).   Based on the diagram, which of the following statements is true?  

• The rRNA in Archaea and eukaryotes indicates that they have many physical similarities.
• The rRNA in eukaryotes is more similar to the rRNA in Archaea than it is to rRNA in Bacteria.
• The rRNA in bacteria indicates that Bacteria, Archaea, and eukaryotes do not have a common ancestor. 
• The rRNA in animals, plants, and fungi differs more than it does among other groups on the Eukarya branch.    

As Carolus Linnaeus was growing up, he was interested in botany and in the names of plants. His ideas have influenced generations of biologists. How did Carolus Linnaeus contribute to modern classification systems?  

• He identified the three domains of life. 
•  He developed two-part scientific names. 
• He standardized common names of organisms.
•  He used chemical characteristics to classify organisms.

What are the two parts of a scientific name?   

• genus and species 
•  phylum and class 
• domain and genus 
• domain and kingdom

During a laboratory project, Zach and Rafael use a dichotomous key to identify different insects. The dichotomous key and one of the insects they need to identify are shown in the following figure.    
In what step of the dichotomous key will  Zach and Rafael identify the insect?  

•  step 1
• step 2
• step 5
• step 6   

Which of the following lists the domains of life?  

•  Archaea, Bacteria, Protista
•  Archaea, Bacteria, Eukarya
• Animalia, Plantae, Protista, Fungi     
• Animalia, Plantae, Fungi, Eukarya

A science class was studying an organism. Under a microscope, the cells had nuclei, a cell membrane, a cell wall, and chloroplasts. In which kingdom would the organism most likely be classified?  

• Animalia 
•  Fungi
• Plantae 
• Protista

What is a major physical characteristic that differs between members of Domains Archaea and Bacteria and members of Domain Eukarya?  

• Members of Domain Eukarya are less complex than the members of Domains Archaea and Bacteria.
• Members of Domains Archaea and Bacteria are multicellular, and members of Domain Eukarya are usually single-celled organisms. 
• Members of Domain Eukarya have cells with membrane-bound organelles, and members of Domains Archaea and Bacteria lack nuclei. 
• Members of Domains Bacteria and Archaea have structures for making their own food, and members of Domain Eukarya lack these structures.