The answer is to create its own energy.
*The adaptive structure and function of leaves and stems help the plant create its own energy.
*Leaves and stems of the plants are a site for photosynthesis, a process in which plants are able to make their own food. Photosynthesis uses water, sunlight, and carbon dioxide to convert it into oxygen and simple sugar which the plant uses.
*Solar energy is captured by the plant's leaves and is stored in the plant in the form of chemical energy.