Biology Tropisms

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A tropism is either Positive, Negative in relation to phototropisms and geotropism. 

Define: Tropism - is a growth in the plant in response to a stimulus. 

  • A positive phototropism means that the stem tip of the plant will grow towards the light. Therefore meaning that the plant will recieve maximum light for photosynthesis
  • A negative phototropism means that the root tip will grow away from the light meaning that the plant has a lower chance of drying out
  • A positive geotropism, is that the root tip will grow towards gravity, therefore…


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