Most biologists now recognize the need to replace the old system for classification of all organisms into a new one, consisting of how many kingdoms? 1. two 2. five 3. six correct 4. four 5. three Explanation: The kingdoms (in ascending order) are bacteria, archaea, protista, fungi, plantae, and animalia. Eukaryotic organisms are classified into a total of how many kingdoms? 1. one 2. three 3. two 4. six 5. four correct Explanation: The kingdoms (in ascending order) are Protista, fungi, plantae, and animalia. Which of the following cannot be included inthe main categories of archaebacteria? 1. nitrogen fixers correct 2. All can be included. 3. extreme halophiles 4. methanogens 5. extreme thermophiles Explanation: Recall Into which of the domains of life should a new organism be assigned, if it is multicellular and anatrophic (autotrophic)? 1. Eukarya correct 2. Archaebacteria 3. Bacteria 4. Monera 5. Protista Explanation: Recall Which kingdom does not contain eukaryotes? 1. fungi 2. planta 3. animalia 4. protista 5. archaebacteria correct A package arrives with the following label: “Beware. This package contains a eukaryotic, multicellular, nonmotile, nonphotosynthetic life form. Open with extreme caution.” To which kingdom of life could this life form belong? 1. Protista 2. Archaebacteria 3. Fungi correct 4. Animalia 5. Plantae Explanation: Archaebacteria are most likely to be found today in I) hot sulfur springs; II) the Dead Sea; III) a small pond in the Tropical Rain Forest. 1. II only 2. I and III only 3. III only 4. I and II only correct 5. I only 6. II and III only 7. None of these 8. All of these Explanation: Archaebacteria are adapted for extreme conditions. The Dead Sea has extreme salinity and hot sulfur springs have extreme temperatures.