What do you think is the most important part of a plant? It is the
seed. The roots, the leaves, the flowers, the fruits—all exist so there can be more and more seeds. Seeds vary in size from the 20,000 tiny seeds in a tobacco pod to a 22-pound coconut.
Yet the size of the seed does not determine the size of the plant. For example, the tallest tree in the world, the California redwood, grows from a very small seed, while the large seed from a watermelon produces a short, creeping vine.