How Do Seeds Travel?

Somebody should figure it out. Why not you?

• PRINT
• EMAIL

What You Need:

 

• a variety of seeds

   

• hand lens

   

• fan

   

• tub of water

   

• pieces of cloth or fur

   

• measuring tape

   

What To Do:

 

1. Examine each seed with hand lens. Note any features you think would boost (or limit) its mobility. For instance, does it look like it might stick to something?

2. Make a prediction about how each seed travels.

3. Put your predictions to the following tests:

 

A. The Wind Test

 

Stand fan on chair at edge of desk so center of fan is aligned with desktop. Hold each seed 10 cm above and 10 cm in front of blowing fan. Let go. Record how far it travels. Repeat for each seed.

 

B. The Hitchhiker Test

 

Press seeds onto different test materials/fur to see if they stick. Record your observations.

 

C. The Water Test

 

Drop seeds one at a time into tub of water and stir. Record your observations.

 

Conclusions:

 

What characteristics do the seeds that passed each test have in common? Is any one travel trick "better" than the others? Will all methods work equally well in all environments? How might the ability to travel in more than one way benefit a seed?

 

Don't Stop Now!

 

Invent a whole new method of seed dispersal. Try it out on a real seed.

"Plant" the mud collected on your shoes or a pet's pays to see what grows.

The Magic School Bus Goes to Seed
Enjoy this Magic School Bus goes to seed activity. Ms. Frizzle's class hangs on inside the tiny bus as it hitches a ride on a wind-traveling seed. The seed travels by clinging to an animal -- in this case, a man on a bicycle!

Activity Plan Mixed Ages: The Sprouting Seed Race
Children participate in a "sprouting seed race," during which they observe and compare the growth rates of different seeds.

Lesson 5: Pumpkin Seed Estimation & Pumpkin Science Photograph Book
Can you guess how many seeds are inside a pumpkin? Have students use their math skills to estimate and count with this Pumpkin Seed Estimation activity. Then, put it all together in a Pumpkin Science Photo Book, using the photographs you�ve snapped along the way!

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BOOK INFORMATION	From Seed to Plant Detailed, colorful illustrations and simple language bring the reader through plant reproduction, seed dispersal, pollen transference, and seed germination. "An appealing presentation of basic science." — Horn Book