Cells and Classification

The following topic has been broken down into 9 components. Click on the part you wish to learn about in more detail below.

Classifying organismsUse of KeysLiving/Non-living
Australian adaptionsMicroscopesThe Cell
Cell DivisionRespirationUni/Multi-cellular

Topic review

Year 7 Cells and Classification Revision Sheet.

  1. Write definitions for the following terms
ClassifyDichotomousKey
LivingNon-livingDead
KingdomVertebrateInvertebrate
PhotosynthesisRespirationCell
MicroscopeAdaptationHabitat
  1. Describe three situations in your everyday life where classification occurs. Explain why this is done.
  2. Describe the 2 main features of a dichotomous key.
  3. Draw a dichotomous key to classify a beaker, a test tube, a retort stand, a tripod and an evaporating basin.
  4. Describe the characteristics that all living things have in common (there are 7).
  5. Explain, using examples, the difference between something that is non-living and something that is dead.
  6. Write the word equation for photosynthesis and identify the types of organisms that do this process and where it occurs.
  7. Write the word equation for respiration and identify the types of organisms that do this process.
  8. Draw a simple diagram of a plant and label the roots, stem, flower and leaves.
  9. Describe the function of the roots, stem, flower and leaves in a plant.
  10. Fill in the table below to summarise the properties of the animal groups:
GroupWarm or Cold blooded?What are they covered in?How do they reproduce?How do they breathe?How do they move around?
            
            
            
            
            
  1. Describe the features of the three groups of mammals (placental, marsupial and monotreme). Give an example of each.
  2. Label the following diagram of an animal cell with the terms nucleus, cell membrane, mitochondria, cytoplasm, vacuole.
  1. Label the following diagram of a plant cell with the terms nucleus, cell membrane, cell wall, mitochondria, chloroplast, cytoplasm, vacuole.
  1. In your book, write a description of the function of the following organelles:
NucleusCell membraneCell wall
MitochondriaChloroplastVacuole
  1. Explain why plant cells need a cell wall, but animal cells don’t.
  2. Explain why plant cells have a large vacuole, and animal cells have a small vacuole.
  3. Explain why plant cells need chloroplasts.
  4. Explain why cells weren’t discovered until after the microscope was invented.
  5. Describe 3 things you must consider when using a microscope safely.
  6. Describe a model you made in this topic. What were the benefits of using a model in science?  What were the limitations?