Storing

Plants are able to store energy for later use in a variety of ways. Starch is the most common form of energy storage in plants, and is typically stored in the stem and root cells of the plant. Other forms of energy storage include oils, lipids, proteins, and sugars. These molecules are typically stored in vacuoles within the plant cell. Oils are most commonly found in seeds and fruits, and are used as a source of energy for the developing embryo. Lipids are often stored in the form of waxes in the cuticle of the plant's epidermis, which helps to reduce water loss. Proteins are also stored in the form of granules within the cytoplasm of the cell, while sugars are stored in the form of sucrose and fructose in the phloem and parenchyma cells. These molecules are used to fuel plant growth and development, and are often used during times of stress, such as drought or cold temperatures.