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      Classification at the cellular level

      Lesson details

      Learning outcome

      I can identify cell features that can be used to classify organisms into the kingdoms of animals, plants, fungi and bacteria.

      Key learning points

      1. Organisms can be classified into groups based on their characteristics at the microscopic, cellular level.
      2. The common features of the cells of animals, plants, fungi and bacteria.
      3. Use of cell features to classify organisms into the kingdoms of animals, plants, fungi and bacteria.

      Keywords

      • Kingdom - A very large group of organisms with only a few features in common, such as all animals or all plants.

      • Animal - Organism made of cells that have a nucleus, but do not have a cell wall and cannot make their own food.

      • Plant - Organism made of cells that have a nucleus, a cell wall and can make their own food.

      • Fungus - Organism made of cells that have a nucleus and a cell wall, but cannot make their own food.

      • Bacterium - Organism made of a single cell that does not have a nucleus.

      Common misconception

      Organisms are classified only according to their visible (macroscopic) features.

      This lesson explores the classification of organisms into kingdoms based on the features of their cells.

      Teacher tip

      For Task B, students should design their own cell, and optionally could make a model of it. The key task of the activity is to explain which kingdom their cell would be classified into according to the features it has.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      Which of these diagrams represents a single cell?

      An image in a quiz
      Correct Answer: An image in a quiz
      An image in a quiz
      An image in a quiz
      An image in a quiz

      Q2.
      Which of the following do all cells have in common?

      nucleus
      Correct answer: cell membrane
      cell wall
      mitochondria

      Q3.
      DNA is stored in the of an animal cell.

      Correct Answer: nucleus

      Q4.
      Match each cell type with the correct description.

      Correct Answer:Bacteria cells,Contain DNA that is loose in the cytoplasm.

      Contain DNA that is loose in the cytoplasm.

      Correct Answer:Plant cells,Contain chloroplasts.

      Contain chloroplasts.

      Correct Answer:All cells,Have a cell membrane and cytoplasm.

      Have a cell membrane and cytoplasm.

      Q5.
      Use the classification key to classify a duckling.

      An image in a quiz
      Correct answer: bird
      mammal
      fish

      Q6.
      Which of the following types of cells has a cell wall?

      Correct answer: plant cells
      animal cells
      Correct answer: fungi cells
      Correct answer: bacteria cells

      6 Questions

      Q1.
      Which of these images represents a fungus cell?

      cell 1
      cell 2
      Correct answer: cell 3
      cell 4

      Q2.
      True or false? Plant cells have a cell wall instead of a cell membrane.

      True
      Correct answer: False

      Q3.
      Bacterial cells do not have a . Their DNA is found in the cytoplasm.

      Correct Answer: nucleus

      Q4.
      Which one of these features would be most helpful when classifying an organism as a plant?

      colour
      whether it is unicellular or multicellular
      Correct answer: whether its cells have a large permanent vacuole

      Q5.
      Match the feature to the kingdom of organisms it is specific to.

      Correct Answer:no nucleus (loose DNA),bacteria

      bacteria

      Correct Answer:chloroplasts,plants

      plants

      Correct Answer:small vacuoles,fungi

      fungi

      Correct Answer:no cell wall,animals

      animals

      Q6.
      According to the classification key, what are the features of a fungus cell?

      An image in a quiz
      It can make its own food.
      Correct answer: It has a cell wall.
      Correct answer: It has a nucleus.
      It has a large permanent vacuole.

      To help you plan your 8 science lesson on: Classification at the cellular level, download all teaching resources for free and adapt to suit your pupils' needs...