Each of these four parts plays an important role in helping the plant to grow and thrive. These easy seed science experiments are a great way for 1st, 2nd, and 3rd grade students to explore the parts of a seed and learn their functions as they dissect and label the inside of a seed. The embryo is a miniature form of the plant that is fed by the nutrition contained in the endosperm. Sexual reproduction is the sole function of flowers, often the showiest part of a plant. The reproductive parts of the flower that are necessary for seed production are the stamen (the male organ) and carpel (the female organ). Parts of a Plant and Their Functions. The embryo is protected from the external environment by the seed coat. The main functions of the root system are absorption of water and minerals from the soil, providing a proper anchorage to the plant parts, storing reserve food material and synthesis of plant growth regulators. They need food and sunlight to grow. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Learn to correlate the parts with their functions. Flowers. Start studying Parts of a Plant cell & their functions (5th Grade). Perfect vs. Imperfect. The Root. Plant Parts and Their Functions – Structural Organization in Plants. If a flower has both of these parts, it is called a perfect flower, even if it lacks some of the other key parts. Aerial structures are those that grow above the Earth's surface, such as stem , leaves, flowers and fruits. The parts-of-the-plant-and-their-functions chart for grade 2 and grade 3 gives a detailed description of the functions of each part of the plant. Parts and their functions - Chart. Flowers' beauty and fragrance evolved not to please humans but to attract pollinators (insects or birds), which are central to the reproductive process. Plants are mainly classified into two parts: The Root System; The Shoot System. 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