How Do Seeds Know Which Way Is Up?
The Big Idea
Uncover the hidden biological balance sensors that allow a tiny, buried seed to feel the Earth's gravity. Discover how heavy starch marbles inside plant cells ensure that roots always grow down and stems always reach for the sun.
Key Vocabulary & Concepts
Hands-On Observation Checklist
Teacher & Parent Discussion Starters
- Why is understanding how do seeds know which way is up? important in everyday real life?
- What variable or factor had the biggest impact when testing the simulation?
- How does this concept connect to another science topic you have learned about?
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