Classification Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What does biological classification mean?

Grouping living things by their similarities and by evidence from genes.

What is a species?

A group of organisms that can breed together to make fertile offspring.

What is the binomial naming system?

A two-part Latin name for each species: the genus and the species.

How do you write a binomial name correctly?

Genus first with a capital letter, species second in lower case. Use italics in print or underline by hand.

What are the main ranks from biggest group to smallest?

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

What are the five kingdoms in the older system?

Animals, Plants, Fungi, Protoctists (protists), and Prokaryotes.

What are the three domains in the newer system?

Bacteria, Archaea, and Eukarya.

Why was the three-domain system proposed?

DNA and chemical evidence showed Archaea are very different from Bacteria and more like Eukarya.

What evidence do scientists use today to classify organisms?

DNA sequences, proteins, and visible features.

What does an evolutionary tree (phylogenetic tree) show?

How species are related and where they share common ancestors.

Why can classification change over time?

New evidence from DNA and fossils can lead scientists to move or rename groups.

How does classification help scientists?

It helps identify species, predict features, and share clear names worldwide.