Photosynthesis: - It is a Latin word, Photo means light and synthesis mean building up. In this process plants prepare carbohydrates in the presence of carbon dioxide and water. The energy needed in this process is obtained form sunlight. Sunlight is absorbed by chlorophyll. Oxygen is also given our as product. This process can also be explained by the following equation: -
Factors and Conditions: -
A few conditions are necessary for photosynthesis: -
Water: -
Plants need water for many activities. If they do not get water they could not
prepare food. Water enters into the plants through root hairs and reach to other
parts of plant through xylem tissues. This water provides hydrogen for
synthesis of glucose and helps in opening and closing of stomata.
Carbon Dioxide: -
Carbon dioxide is needed in very little quantity by the plants. It diffuses in
plants through stomata of plants. Carbon dioxide provides carbon to newly
synthesize glucose. If its quantity is increased in atmosphere then the rate of
photosynthesis is also increases.
Chlorophyll: -
It is green in colour and present in green leaves. It converts solar energy to
chemical energy. Plants without chlorophyll cannot prepare the glucose.
Light: -
It is very necessary for photosynthesis. It is necessary for reaction of carbon
dioxide with water. Photosynthesis cannot takes place without light.
Temperature: -
Photosynthesis can takes place in proper temperature. The rate of
photosynthesis increases between 10 C to 40 C.