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Variation of Traits Activity for Kids
- 3Bean seeds
- 3Small cups or glass dishes
- 1Bag of potting soil
- 1Pile of dry dirt
- 3Cotton balls
- 1Spray bottle with water
- 1Pull apart the cotton balls a little so they are fluffy, and put them on a plate.
- 3Wrap one bean seed in each cotton ball and spray them generously with water.
- 5Place all three into one of the glass containers.
- 6Give it a few sprays every other day.
- 7In about a week, you should see the seeds sprouting.
- 8Plant the first bean sprout in a container using potting soil and give it a few sprays of water.
- 10Plant the second sprout in the same way but use dry dirt and do not water it.
- 11Plant the third sprout in potting soil but add lots of water to represent a flooded area.
- 12Leave all three beans to grow for several weeks and observe the results.
How It Works
In Zoe’s experiment, the bean that was planted under optimal conditions—rich soil, regular water, and sunlight—grew the best. The optimal conditions led to a plant with healthy traits. The plant grown in drought-like conditions didn’t grow much. Its small size was influenced by the dry environmental conditions. The plant grown in flood-like conditions was also small, and its leaves turned yellow. These traits were influenced by the very wet environment. Many traits are inherited from parents, but some (like the ones we observed in this demonstration) are influenced by the environment.