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IBDP Biology- Different Phylas

Topic 5- Plant, Animal, Classification

· IBDP BIOLOGY,IB

In this IBDP Biology blog post, it will include the different plant and animal phylas, and natural classification, let's go!

Plant Phylas

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Animal Phyla 

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Natural Classification 

Members of a group share homologous traits that are inherited from common ancestors

Artificial classification: Grouping birds, bats and insects together because of their ability to fly as they do not share a common ancestor

Natural Classification is not straightforward because:

  • Convergent Evolution - 

Make distinctly related organisms appear similar

  • Adaptive Radiation - 

Make similar organisms appear very different from each other

ADVANTAGES:

- Identification of a species is easier dichotomus keys can be used to help this process

- All members of a group inherit similar characteristics this allows for characteristics to be predicted. If a new species was discovered predictions could be made about it  

Reviewing Classification 

  • Members of a group that do not share a common ancestor are split into more taxa
  • If species are found to share a common ancestor the taxa is reunited 

That's the end!

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Drafted by Venetia (Biology)

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