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I/GCSE Biology - Vertebrates and Invertebrates 

Edexcel Biology Vertebrates and Invertebrates

· igcse biology,gcse biology,edexcel,vertebrates,invertebrates
  • In a phylum 'Chordata' the animals have a supporting rod running across their back, many animals in the chordata are vertebrates

Vertebrate groups split in to five groups...🦍

  • Oxygen absorption- some use gills others use their lungs
  • Fertilisation- inside the body (internal fertilisation), outside the body (external fertilisation)
  • Reproduction- young born alive (viviparous), lay eggs (oviparous)
  • Thermoregulation- controlling their body temperature (homeotherm), body temperature varies with environment (poikilotherm)

Vertebrates- have a backbone that acts as a supporting rod (humans)                                       

Invertebrates- don't have a backbone (starfish)                                                          

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You may also have to know these words for I/GCSE Biology

  • Internal- fertilisation inside of the body (humans)
  • External- fertilisation outside of the body (frogs) 
  • Viviparous- give brith to live young (humans)
  • Oviparous- lay eggs (birds)
  • Homeotherm- control their own body temperature (humans)
  • Poikilotherm- body temperature varies according to the environment
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Drafted by Catrina (Biology)

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