PROCESS IN WHICH PLANTS CONVERT
LIGHT ENERGY, CARBON DIOXIDE AND
WATER INTO GLUCOSE
input of photosynthesis
Carbon dioxide; Water; Light energy.
CHLOROPHYLL,ENZYMES and ATP
ARE NEEDED AS WELL
output of photosynthesis
Glucose and Oxygen
chemical equation of photosynthesis
CO2+H2O+LIGHT ENERGY= C6H12O6+O2
2 PHASES OF PHOTOSYNTHESIS
• The light-dependent phase; in the thylakoids of the
chloroplasts
Light energy is absorbed and causes ATP to be
formed. (Photolysis) Water is split in the presence of
light energy releasing oxygen and hydrogen.
(Phosphorylation)
• The light-independent phase/Dark phase/Calvin
cycle; in the stroma of the chloroplast
Carbon dioxide is absorbed from atmosphere and
hydrogen atoms are combined using ATP to form
glucose.
How does the plant structure help photosynthesis
occur?
• The roots of the plant absorb water
• The xylem transports water to cells that
photosynthesize
importance of photosynthesis • The mesophyll cells in the plant leaves hold
• Source of food; plants create chloroplasts in which photosynthesis occurs
food(glucose) that we can consume • The stomata of the plant allows oxygen to diffuse out
• Oxygen gas is produced which is and carbon dioxide to diffuse in the plant
important for humans to be able to • The leaves provide a surface area for maximum capture
breath of light
• Phloem carries the product of photosynthesis away
• Cuticle and epidermis allow light to pass through due
to its transparency