Photosynthesis is a process in which green plants and few organisms use sunlight to synthesize their food from carbon di- oxide and water. In plants, during photosynthesis, green pigment known as chlorophyll is involved and oxygen is generated at a by product.
All the sunlight falling on plant is not absorbed. Only half of the falling light which lies in the right frequency to power photosynthesis is absorbed. Out of this falling light, only 8 % to 11% is absorbed by the plant and only 3 % to 6 % is actually used to form chemical energy.
In plants, the chloroplast is necessary to photosynthesis, and mitochondria contain enzymes responsible for producing energy
During the winter season, the tree branches get dormant.
<u>Explanation:</u>
As the winter season starts, many plants show very slower metabolism that is the growth of the plants become very slow.
During the winter, there is very low amount of sunlight that the plants receive and so the synthesis of chlorophyll by the plants also in very small amount, and so there is least amount of sugar to metabolize by means of a slower Photosynthesis.
These tree branches become dormant during winter season, and it is mostly covered with the scales.
