Lesson 3.4.5.1

3.4.5.1 Species, binomial names and classification Quiz: AQA Biology, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.4.5.1, Species, binomial names and classification: 20 multiple choice questions for the AQA Biology (7402), Unit 4: Genetic information, variation and relationships, written with Revision Ninja.

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The 20 questions

  1. What must two organisms produce when interbreeding to be classified as the same species?

    • Asexual clones
    • Fertile offspring
    • Viable hybrids
    • Infertile offspring

  2. In the binomial Homo sapiens, what does the first word identify?

    • The family
    • The kingdom
    • The genus
    • The species only

  3. In the taxonomic hierarchy, which taxon comes directly between phylum and order?

    • Class
    • Kingdom
    • Family
    • Genus

  4. What name is given to any taxonomic group within a classification hierarchy?

    • Taxon
    • Clade
    • Phylum
    • Domain

  5. Which feature describes the arrangement of taxa in a phylogenetic hierarchy?

    • Linear progression
    • Overlapping groups
    • No overlap
    • Unnested ranks

  6. Which modern technique helps clarify evolutionary relationships between organisms by comparing biological molecules?

    • Morphological comparison
    • Fossil measurement
    • Genome sequencing
    • Habitat mapping

  7. Two organisms interbreed to produce infertile offspring. What can be concluded about them?

    • Same population
    • Identical genotypes
    • Different species
    • Same species

  8. The lion is named Panthera leo. Which part of this binomial is the genus?

    • Panthera
    • Felidae
    • Panthera leo
    • leo

  9. Two species belong to the same genus. What does this indicate about their evolutionary relationship?

    • Distantly related
    • Unrelated lineages
    • Closely related
    • Completely identical

  10. What is the primary role of courtship behaviour in ensuring successful reproduction between conspecifics?

    • Territory defence
    • Niche expansion
    • Species recognition
    • Predator avoidance

  11. Which part of a binomial name is written first and given a capital letter?

    • Family
    • Genus
    • Order
    • Species

  12. Which type of classification system groups organisms based on their shared evolutionary history?

    • Artificial classification
    • Phenetic classification
    • Morphological classification
    • Phylogenetic classification

  13. Compared to organisms in the same genus, organisms in the same family but different genera are what?

    • Completely unrelated
    • Identically related
    • Less closely related
    • More closely related

  14. What happens to a classification system when new DNA evidence reveals unexpected evolutionary relationships?

    • Reclassification occurs
    • Classification stays fixed
    • Species become extinct
    • Binomial names merge

  15. Two bird populations look identical but have different courtship displays and cannot interbreed. What are they?

    • Same species
    • Different species
    • Same population
    • Asexual clones

  16. Which taxon in the hierarchy is the smallest?

    • Species
    • Genus
    • Kingdom
    • Family

  17. Which type of classification divides organisms by observable physical features rather than evolutionary relationships?

    • Molecular classification
    • Phylogenetic classification
    • Artificial classification
    • Genetic classification

  18. Species A and B differ by 2% DNA bases; B and C differ by 10%. Which pair is closely related?

    • A and C
    • All equally related
    • B and C
    • A and B

  19. What is the main advantage of using binomial names instead of common names for species?

    • Shows habitat type
    • Simpler to write
    • Identifies exact age
    • Avoids language confusion

  20. In the taxonomic hierarchy, what taxonomic group rank is Homo?

    • Order
    • Family
    • Species
    • Genus

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