This document describes the main parts of a plant, including the seed, roots, leaves, seedling, flower, fruit, pollen, and stem. Seeds are protected by a seed coat and sprout into seedlings, whose roots take in water and nutrients from the soil while the stem grows upward. Leaves use sunlight, water, and air to photosynthesize and produce food for the plant. Flowers contain pollen and produce fruit containing seeds, completing the life cycle.