Seed Size and Vigor
Seed Size and Vigor is how a seed's size affects how fast and strong it grows.
Think of it this way
A large glass jar holds much more water than a small glass jar. In the same way, a big seed holds more stored food than a small seed. That extra food powers faster, stronger growth right from the start. A small seed runs out of fuel sooner and grows more slowly.
Explaining seed size and vigor by grade level
A big bean seed holds more food inside. That food helps the baby plant push up through the soil. Small seeds have less food stored. So big seeds often grow faster at first.