Shoreline Vertebrates
Open to everyone until Tuesday, September 29
To keep it, print it while it is open.
Animal groups began with simple invertebrates in the water. Over time, some vertebrates developed limbs and lungs, letting fish relatives move onto land.
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.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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