The following links offer some useful revision on Distribution of Organisms to support your learning:
BBC Bitesize – Distribution of Organisms
BBC Bitesize Video – Distribution of Organisms
West OS – Distribution of Organisms
Distribution of Organisms Summary Note
To help with your learning, you may also wish to try some of the following resources:
Distribution of Organisms Quizlet Game
Biotic or Abiotic Wordwall Game
Distribution of Organisms PPQs & Marking Scheme
Within the National 5 Biology course, you will need to know:
- Competition for resources, disease, food availability, grazing and predation are biotic factors. Light intensity, moisture, pH and temperature are abiotic factors.
- Measuring abiotic factors such as light intensity, soil moisture, pH and temperature. Possible sources of error and how to minimise them.
- Sampling of plants and animals using quadrats and pitfall traps. Evaluation of limitations and sources of error in their use.
- Using and constructing paired-statement keys to identify organisms.
- The effect of biotic and abiotic factors on biodiversity and the distribution of organisms.
- Indicator species are species that by their presence or absence indicate environmental quality/levels of pollution.
