From the single-leafed duckweed to the tallest redwood trees, plants follow a specific life cycle. The cycle typically begins with a seed. Once germinated, the plant grows and eventually reproduces, continuing the life cycle.
Seeds contain all of the genetic material to produce a plant in a relatively small package. Energy in the form of starches is stored within the seed to support the plant when it germinates.
With the right conditions—including temperature, water quantity, soil quality and light exposure—the seed begins to germinate. The embryo in the seed begins to grow, producing a root system, stem and leaves.