Plant Life Cycle: Seeds

Study Notes

Plant Life Cycle

Every plant starts as a seed, which is an undeveloped plant inside a hard outer layer.
Seeds contain the beginning of new life for a plant and come in various shapes and sizes, growing into the parent plant they came from.
Seeds are protected by a seed coat and are spread by wind, water, or animals to new places.

Germination & Seedling

A seed germinates when it finds the right combination of soil, sunlight, and water, beginning to grow and making a new plant.
The new plant breaks out of the seed coat and grows into a small plant called a seedling.
Seedlings have a few leaves, spread roots into the soil, and use sun energy to make their own food, soaking up water and nutrients from the soil.

Young Adult Plant

As the plant continues to grow, it becomes a young adult plant, thicker, taller, and stronger than a seedling.
Young adult plants have more leaves and deeper roots, looking more like their parent plants but still not old enough to have flowers, fruit, or seeds.

Adulthood & Reproduction

When a plant reaches a mature size, it's called an adult plant, ready to produce its own seeds.
Some plants produce pollen in flowers, helping seeds grow, while others produce seeds in cones or flowers and fruit.
Adult plants spread their seeds by wind, water, or animals, repeating the life cycle.
The length of a plant's life cycle varies, with some plants like tomato plants having short cycles and others like pine trees having cycles that last many years or centuries.

Description

Learn about the basics of plant life cycles, including the role of seeds in plant growth and development. Discover how seeds come in different shapes and sizes and grow into the parent plant. Explore the outer layer of a seed, also known as the seed coat.