Classification of Living Things Quiz

Grade 6 · Science · Quiz

Test your knowledge of taxonomy, classification levels, and scientific naming.

Questions

1. Who invented the modern classification system still used today?

   1. Charles Darwin
   2. Carl Linnaeus
   3. Gregor Mendel
   4. Isaac Newton
   Show answer

   Answer: Carl Linnaeus

   Carl Linnaeus (1707–1778) developed the hierarchical classification system and binomial nomenclature that scientists still use today.

2. Bacteria is one of the three domains of life.

   Show answer

   Answer: True

   The three domains are Bacteria, Archaea, and Eukarya. Bacteria are prokaryotes and are the most numerous life forms on Earth.

3. Which classification level is just above species?

   1. Family
   2. Phylum
   3. Class
   4. Genus
   Show answer

   Answer: Genus

   The classification order from broadest to specific: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. Genus is just above species.

4. The correct way to write a scientific name is to capitalize the ___ and lowercase the species.

   Show answer

   Answer: genus

   In binomial nomenclature, the genus is always capitalized (Homo) and the species epithet is lowercase (sapiens). Both are italicized.

5. Fungi, Animalia, Plantae, and Protista are all kingdoms within which domain?

   1. Bacteria
   2. Archaea
   3. Eukarya
   4. Prokaryota
   Show answer

   Answer: Eukarya

   Eukarya includes all organisms with a true (membrane-bound) nucleus. Its kingdoms include Animalia, Plantae, Fungi, and Protista.

6. Two animals in the same genus are always in the same species.

   Show answer

   Answer: False

   Two animals in the same genus are closely related but are different species. For example, lions (Panthera leo) and tigers (Panthera tigris) share the genus Panthera but are different species.

7. Which of the following is a correctly written scientific name?

   1. homo sapiens
   2. Homo Sapiens
   3. Homo sapiens
   4. homo Sapiens
   Show answer

   Answer: Homo sapiens

   Correct format: Genus is capitalized, species is lowercase, and both are italicized (or underlined in handwriting).

8. The mnemonic 'Dear King Philip Came Over For Great Soup' helps remember the 8 levels of classification from broadest to most ___.

   Show answer

   Answer: specific

   The levels from Domain (broadest) to Species (most specific): Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

9. What do members of the same species share that members of the same genus do not necessarily share?

   1. Same body structure
   2. Ability to interbreed and produce fertile offspring
   3. Same diet
   4. Same habitat
   Show answer

   Answer: Ability to interbreed and produce fertile offspring

   Biological species definition: members can successfully interbreed and have fertile offspring. Members of the same genus are related but may not interbreed.

10. Modern classification increasingly uses DNA evidence to determine relationships between organisms.

    Show answer

    Answer: True

    DNA sequencing has revolutionized taxonomy. Sometimes organisms that look similar are genetically distant, and vice versa. DNA provides objective evolutionary evidence.

Get a personalized course on Classification of Living Things built around your child.