======Seed Dispersal====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** How Seeds Spread in Nature ====Summary==== {{$demo.summary}} ====Procedure==== - Collect a variety of dried seeds and pods (such as dandelion, burdock, acorn, milkweed, and thistle). - Observe the seeds and note their structures (fluff, wings, spikes, pods). - Test wind dispersal by blowing lightweight seeds with a fan or hair dryer. - Test water dispersal by placing seeds in bowls of water and seeing which float or sink. - Test animal dispersal by pressing sticky seeds into painter’s tape and sticking them to fabric or skin. - Test mechanical dispersal by gently pressing or twisting open dried pods to see seeds pop out. - Record observations and compare dispersal strategies. ====Links==== Seed dispersal - TheParklands1: {{youtube>6P62Mm7gqoM?}}\\ 📄 Seed Dispersal Experiment for Kids - Little Bins for Little Hands: [[https://littlebinsforlittlehands.com/seed-dispersal-experiment-for-kids/]]\\ ====Variations==== * Create a seed scavenger hunt outdoors to collect local examples of dispersal. * Build a model wind-dispersal system with coffee filters, string, and tape. * Slice open fruits like apples or cucumbers to count and compare seeds. * Make a chart or Venn diagram sorting seeds by dispersal type. ====Safety Precautions==== * Handle scissors carefully when cutting tape or pods. * Be cautious with small seeds around young children (choking hazard). * Use a hair dryer on a low setting to avoid burns or blowing debris into eyes. * Wash hands after handling seeds, especially if using wild plants. ====Questions to Consider==== * Why is it important for seeds to disperse away from the parent plant? (To reduce competition for light, water, and nutrients.) * Which type of dispersal would work best in a windy environment? (Wind dispersal, such as dandelions or maple helicopters.) * How do animals help plants spread seeds? (Seeds stick to fur or are eaten and later excreted.) * Which dispersal type seems most effective for producing many new plants? (Depends on the environment—wind spreads far, animals provide targeted dispersal, water carries seeds downstream.)