PinkMonkey Online Study Guide-Biology
4.6 Significance of Photosynthesis
(1) It is the primary source of organic food
and food energy (ATP) for all forms of life, either directly or
(2) Excess sugars produced in photosynthesis
are either stored in the form of carbohydrates or used in the biosynthesis
of other organic compounds.
(3) In any ecosystem, green plants represent
the most essential biotic components as they are the primary producers.
(4) Photosynthesis helps to purify air and
also maintain balance of oxygen and carbon dioxide in the ecosystem.
(5) Oxygenic photosynthesis was responsible
for converting the totally anaerobic condition on earth into aerobic
atmosphere present now.
(6) The fossil fuels (e.g. natural gas, coal,
petroleum (oil), etc.) are all energy-rich materials of an organic
origin. The energy stored in all these fuels is basically solar
energy which was trapped and stored during photosynthesis in the