why do plants need sunlight to grow

Plants are autotrophic organisms, meaning they generate a carbon energy source from inorganic components. They have adapted the capability of utilizing sunlight, water and atmospheric carbon dioxide to generate energy for cell maintenance and growth. The oxygen that we breath comes from the photosynthesis carried out by plants. Through the use of sunlight and carbon dioxide, the oxygen bound in water molecules is released into the atmosphere. During the photosynthetic process, electrons are removed from the water molecule, which is how oxygen becomes separated from the hydrogen. Plants are able to convert the heat energy from sunlight into a usable, chemical-free energy that drives the photosynthetic process. Without adequate sunlight, plants would not be able photosynthesize and no oxygen would be released into the atmosphere.


Biological activity slows as temperatures decrease. The cellular functions required for photosynthesis slow down as the air cools, thereby slowing growth. Additionally, cold air typically contains less moisture, which can result in water loss from leaf surfaces and also can cause portions of water inside of the plant to freeze. Plants require more than just a usable carbon source for maintaining their structure and increasing their growth potential. Through their root systems, they are able to obtain nutrients such as nitrogen, phosphorus, calcium and magnesium from the soil. Also, soil serves to stabilize plants and prevent them from falling over. Fertilizers are frequently applied to stimulate plant growth. Certain nutrients, such as nitrogen and phosphorus are often limited in supply, which can suppress plant growth.


Therefore, fertilizers give plants an additional growth boost.
Light is something that sustains all life on this planet, but we may wonder why do plants grow with light? When you buy a new plant, you may wonder what kind of light do plants need? Do all plants need the same amount of light? How can I tell if my plant is having problems with too little light? Keep reading to answer these questions on how light affects the growth of a plant. All things need energy to grow. We get energy from the food we eat. Plants get energy from light through a process called. This is how light affects the growth of a plant. Without light, a plant would not be able to produce the energy it needs to grow. What Kind of Light Do Plants Need? While plants need light to grow, not all light or plants are the same. If someone asks, What kind of light do plants need they may be referring to the light spectrum.


Plants are affected by light that falls into the blue spectrum of the light scale. Daylight, and grow lights all have blue tones in them and will help provide the light your plant needs. Incandescent and halogen lights are more red and will not help your plant grow. The question, What kind of light do plants need may also refer to time needed in light. Normally they are referred to as /shade, /part sun or /full sun plants. Low or shade plants may need only a few hours of light a day while high or full sun plants need eight or more hours of light a day. Sometimes a plant will not get enough light and will have problems with too little light. Plants affected by light shortages or too little blue light will have the following signs:

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