Photosynthesis
Big Ideas
7.5A Recognize that radiant energy from
the Sun is transformed into chemical
energy through the process of
photosynthesis
• I can describe the energy transformation in
photosynthesis
• I can identify structures of a plant and their role in
photosynthesis
• I can identify the reactants and products of
photosynthesis (name and formulas)
• I can explain how photosynthesis fits in a food
chain/web
Photosynthesis…
Radiant Energy
AKA…
Solar Energy
Light Energy
transformed
Chemical Energy
Stamen (male)
Pistol (female)
Petal
Stomata
Chloroplast
Leaves
Stem
Roots
Xylem Phloem
Food Storage Bulb
Plant Structures
• Xylem Transports WATER
• Phloem Transports FOOD/GLUCOSE
Pore/hole that allows gas exchange
• Stomata
(CO2 in and O2 out)
• Chloroplast Plant cell organelle where photosynthesis takes place;
contains chlorophyll – pigment that captures sunlight
• Roots Absorb water from the ground
• Leaves Contain stomata for gas exchange
• Food Storage Plant stores food here until
Bulb
needed
Glucose
(Sugar)
Chemical Equation:
6CO2 + 6H2O + Energy
Carbon dioxide + Water + Sunlight
C6H12O6 + 6O2
Glucose (Sugar) + Oxygen
Photosynthesis
• Transforms Radiant Energy  Chemical Energy
• Water + Carbon Dioxide sunlight Glucose (sugar) +
Oxygen
• H2O + CO2  C6H12O6 + O2
• Reactants  Products
• Chemical change b/c NEW substances are formed
• Where? PLANTS LEAF Organelle: CHLOROPLAST
How photosynthesis fits into a food chain/web
All energy on Earth originates from the Sun