Download HOW PLANTS PRODUCE FOOD: PHOTOSYNTHESIS

HOW PLANTS PRODUCE FOOD: PHOTOSYNTHESIS
Green plants are the energy producers of our
ecosystems. They use the sun’s energy
to manufacture simple sugars, which supply
our food energy. The method is called photosynthesis.
In the process of making their food and ours, plants
release the oxygen we breathe.
This is how it works.
B
A
CO2
CO2
CO2
E
F
D
O2
O2
O2
C
PHOTOSYNTHESIS IS A CHEMICAL REACTION
A
B
C
Light Energy + Carbon dioxide + Water
Light Energy + CO2 + H2O
Plants get energy from the
sun.
A
B They get carbon dioxide (CO )
2
from the air.
Plant roots take water from
the ground.
C
D
E
Sugar + Oxygen
(CH2O) + O2
Tiny openings in leaves open
and close like mouths. These
stomata open to let in carbon
dioxide and release oxygen. They
close to hold in moisture.
D
F
Tiny green organs called
chloroplasts are in the leaves,
too. They use A , B and C
to produce E and F .
Simple sugars are made
during this process.
E
F
Oxygen (O2) is released.