PLANT NUTRITION
Do we obtain nutrients
the same way plants do?
AUTOTROPH
HETEROTROPH
Organisms that produce their
own food from inorganic
substances.
Organisms that cannot make
their own food and must
consume other organisms.
Examples: Plants, algae, some
bacteria.
Examples: Animals, fungi, most
bacteria.
They are PRODUCERS
They are CONSUMERS
https://youtu.be/f8G7IulYxiA?feature=shared
PARTS OF THE PLANT
LEAF
STEM
SOIL
ROOT
PARTS OF THE PLANT
LEAF
STEM
SOIL
ROOT
HOW DOES THE PLANT OBTAIN “FOOD”?
WHAT DOES THE PLANT NEED TO MAKE PS?
1. Carbon dioxide
It is a simple gas which is
absorbed by small pores
present on the lower side
of the leaves.
2. Water
It is a molecule absorbed
by the roots of the
plant. It is then
transported to the leaves
through the stem.
3. Sunlight
Solar radiation is a type of
ENERGY!
Sunlight provides the energy
needed to break up the bonds
between the atoms that make
carbon dioxide and water.
WHAT DOES THE PLANT NEED TO MAKE PS?
Leaf
● absorbs CO2 by diffusion
● absorbs sunlight
Root
absorbs H2O
through the
root hair cells.
Then the stem
transports it to
the leaves.
Where does photosynthesis
occur?
PHOTOSYNTHESIS: CHEMICAL EQUATION
THINK: IS THIS POSSIBLE? Discuss in groups
PHOTOSYNTHESIS: CHEMICAL EQUATION
IS ONE MOLECULE OF CO2 and H2O
ENOUGH TO
BUILD UP GLUCOSE?
PHOTOSYNTHESIS: CHEMICAL EQUATION
Balanced
equation for
PS:
Six carbon dioxide molecules (CO2) are required to create one
glucose molecule (C6H12O6) because carbon dioxide has one
carbon per molecule, while glucose molecules have six
carbons.
Joke analysis