Light is an external or external factor that affects growth and development in plants.

Plants placed in sun-exposed rooms will grow healthier and fresher than plants placed in a sunless room.

Plants use sunlight to photosynthesize and make food. Without the sun light, there would be no life on Earth. In addition to react on plants and sunlight can also react to a person's health, both good and bad. In light, the human body produces its own vitamin D. Too long exposed to sunlight can cause skin burns.

Plants need sunlight to grow. With water without sunlight, the plant will grow high quickly, but it will look yellow and lack water, although when touched, the leaves are palpable very wet.

From the above understanding has been alluded to that, with sunlight the plant will perform the process of photosynthesis. Photosynthesis is the process of forming food substances (glucose) in plants that use nutrients, water and carbon dioxide.