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Shoreline Vertebrates
Age 15 · Animals
Animal groups began with simple invertebrates in the water. Over time, some vertebrates developed limbs and lungs, letting fish relatives move onto land.
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Age 15: open this week
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In the picture
- A jellyfish: a simple invertebrate with no backbone
- A worm: a soft-bodied invertebrate living in wet mud
- A fish with stout fins: a vertebrate with gills and fin supports
- A frog-like creature: a vertebrate with four limbs and lungs
Examples
- A tadpole growing legs as it becomes a frog.
- A mudskipper using its fins to move across wet ground.
Key takeaways
- Invertebrates were present before vertebrates with limbs and lungs.
- Limbs and lungs helped some fish relatives live on land.
Quiz: Shoreline Vertebrates (Age 15)
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According to the card, which group was present before vertebrates with limbs and lungs?
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What helped some fish relatives move onto land?
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Which animal is described as having four limbs and lungs?
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