Plants go through a cycle of stages: seed, sprout, young plant, adult plant with flowers, and then seeds again. The adult plant makes seeds that start the cycle over. This repeating pattern is called a life cycle, and it keeps the plant species going generation after generation.
Grow a fast-growing plant (like a bean or sunflower) from seed to flower over several weeks. Draw each stage in a circular diagram. Compare the life cycle poster to what is happening in the real plant.
Every plant you see started as a tiny seed. And every adult plant you see is working toward making new seeds. This journey from seed back to seed is called the plant life cycle, and it goes around and around like a circle.
The cycle starts with a seed. When the seed gets water, warmth, and air, it germinates — a tiny root pushes down and a stem pushes up. Now it is a sprout, just poking out of the soil with its first small leaves. The sprout drinks water through its roots and catches sunlight with its leaves, growing taller and stronger each day.
Over time, the sprout becomes a young plant with a thicker stem and more leaves. It keeps growing until it is a full adult plant. The adult plant grows flowers, and those flowers get pollinated by bees, wind, or other helpers. After pollination, the flowers make fruits with seeds inside. When those seeds fall to the ground or get carried away by wind or animals, they can germinate and grow into brand new plants — and the cycle starts all over again.
This is why the life cycle is drawn as a circle, not a straight line. There is no real beginning or end — just the same stages happening again and again across generations. The sunflower in your garden grew from a seed, and it is making seeds right now that could become next year's sunflowers. That is how plants keep going, year after year, for millions of years.