10.3- adaptations

• Adaptations are features that help an organism survive in its environment.
• maladaptation is traits that inhibit survival
• abiotic factors are non-living factors that affect the environment and living organisms

  they include

  • temp
  • drying out
  • oxygen
  • light
• structural adaptations are physical features of an organism that help it survive in its environment
• Physiological: relating to the branch of biology that deals with the normal functions of living organisms and their parts
• behavioural adaptations are the physical changes that an organism makes to help it survive in its environment
• tarrakawarra water control mechanism include

  • metabolic water
  • vey little loss
  • evaporation
• frogs

  • Burrow deeply
  • make a chamber
  • low metabollic rate
  • buried
  • stop low metabolism after there is soaking amounts of rain
• distribution

  hummock grasslands - high evaporation, high temp and low rainfall

  acacia shrub- low rain, high temp

  choropod shrub- low rain, high temp and salty soil

  tussock- clay soil

  tropical- winter droughts

  mallee- intermediate rainfall, poor soil

  eucalypt- high rainfall, poor soil

  rainforest- tropical or temperate.
• Plants adaptations

  • maximise water uptake
  • minimise loss
  • Productising drought resident leaves
• Australia 2 root systems

  • water tapper
  • shallow and horizontal
• plants prevent loss

  • cuticle
  • reduce stomata number
  • water storage tissue
• plants freeze process

  - temp drops

  -cytosol is greater

  -water moves out

  -ice crystals

  -ice grows between cells