CONTENT
The two most important prerequisites for life are a continuous supply of materials
for the growth of the body and carrying out various processes of life. As you
already know that light energy is converted to chemical energy during
photosynthesis, and this energy is stored in glucose molecules, which aggregate
to store starch.
However, the energy (ATP) stored in this glucose has to be made available to cells in
usable forms. This is the process of respiration.
RELATIONSHIP BETWEEN RESPIRATION AND PHOTOSYNTHESIS
• Photosynthesis converts light energy into chemical energy stored in glucose,
using carbon dioxide and water, while producing oxygen as a byproduct.
• Cellular respiration breaks down glucose to release energy, producing carbon
dioxide and water as byproducts, which are then used in photosynthesis.
• Together, these processes create a cycle where the products of one are the
reactants of the other, helping to regulate atmospheric concentrations of oxygen
and carbon dioxide.
• This relationship is crucial for energy flow in ecosystems and the survival of living
organisms.
IN SUMMARY, Photosynthesis and cellular respiration are complementary
biochemical reactions. Photosynthesis requires the products of respiration, while
respiration requires the products of photosynthesis. Together, these reactions
,allow cells to make and store energy and help regulate atmospheric carbon dioxide
and oxygen concentrations.
Note: Respiration occurs at day and night, but photosynthesis occurs during
the day.
,
, SO, WHAT IS PLANT RESPIRATION
• Plant respiration or cellular respiration is the stepwise oxidation of complex
organic molecules and release of energy as Adenosine Triphosphate (ATP) for
various cellular metabolic activities.
• Plant respiration is also a biochemical process in all living plant cells, allowing them
to convert stored energy from glucose into usable energy in the form of ATP
(adenosine triphosphate).
• This process is essential for growth, development, and metabolic functions in
plants. It involves various enzymes acting as biocatalysts.