What are some seeds I can use for my science project?

I need some seeds that are bigger than the size of a marigold's seed.
What are some seeds I can use for my science project?
sunflower

pinto bean

pumpkin

squash
Reply:Fast growing brassica is a good seed to use because it grows quickly and easily. If you google it I'm sure you can find a place to order some and examples for experiments. It's famous for being a developed plant specifically for experiments
Reply:A good one is an avocado seed. I think everyone has to grow one of these at some time in their life...it's written down somewhere.



Have your mom or dad buy an avocado and pull the fruit away from the seed. Then take the seed and put four toothpicks in it all around the seed and hang it in a drinking glass so that the bottom of it is submerged in water.



LOL I never got past this stage..it always got slimy with neglect at this point, but the site below tells you what to do to continue growing it.
Reply:wheat

gram bean look out in kitchen or got to grosary shop plenty seed will be available.