Photosynthesis  is  a process in which  organic food is  prepared by     using    energy of sunlight .All life on earth is directly dependent on this process.Like  the energy  products formed as a result  of this process are used as food,oxygen expelled out is  needed for the process of respiration.So  we can say that  this process even ensures the regulation of  biological cycles.

                 There  are many benefits to mankind from this  process.A number of  concepts  and disciplines are established for this  process.Generally  at night, this process is almost stopped  because   of the absence of light this is because the chlorophyll(chloroplast)   traps the light energy  from sun  at night due to lack of light    this process is stopped  and in turn the process of respiration is initiated`.We must appreciate those efforts  which lead to the  preservation of our plants

this process serves as a life blood for the planet earth. Not only we get nutrition for from plants but also they clean our environment.