Transcript How plants make their food

Lesson: Energy and Space 1
Wednesday, Nov. 9
Objective: Describe how plants make their food
(photosynthesis)
Warm Up:
What do all living things need?
Write down as many things as you can in
one minute. Ready Go!
Plants Make Their Own Food: A
Recipe for Photosynthesis
Write this down:
Photosynthesis is: How
plants make their food
Plants do not need to go to the cafeteria for
lunch!
They do need a few special ingredients,
though…
What is needed for
photosynthesis to occur?
Carbon Dioxide (CO2)
CO2 is breathed out by animals
(and people).
CO
2
What is needed for
photosynthesis to occur?
Light
Plants use light energy to make
sugar
What is needed for
photosynthesis to occur?
Water
The plant’s leaves
and roots soak up
water to use for
photosynthesis.
What is MADE by plants as a result
of photosynthesis?
Oxygen
(O2)
We use it to breathe!
What is MADE by plants as a result
of photosynthesis?
Sugar (Food)
What is MADE by plants as a result
of photosynthesis?
Water
Plants release water
through their leaves. This is
called transpiration!
A Formula for Photosynthesis
Sun + Carbon Dioxide + Water =
Food + Oxygen + Water
What part of the plant absorbs the sun’s
energy? Chlorophyll!
Now it’s YOUR TURN:
Photosynthesis
Plants Need
Plants Make
3 factors
plants need
3 factors
plants make
PHOTOSYNTHESIS
Plants Need
Plants Make
Sunlight
Sugar (Food)
Carbon
Dioxide
(CO2)
Oxygen
(O2)
Water
Water
Why are plants called
producers?
SUGAR
WATER
WHY IS PHOTOSYNTHESIS SO
IMPORTANT?
PHOTOSYNTHESIS is one of the most important
biological process on earth!
· Provides the oxygen (O2) we breathe
· Consumes extra Carbon Dioxide CO2
· Makes Plant Food
· Gives US food!
But HOW can plants use
sunlight to make food??????
1. Plants get energy from the sun.
2. Inside the plant, the Chloroplast is where
photosynthesis happens.
3. Chloroplasts are filled with chlorophyll.
4. Chlorophyll is the stuff that makes plants green.
5. Chlorophyll absorbs the sun’s energy and gives the plants
energy to do photosynthesis.
Question: What is the energy source that a plant needs to do photosynthesis?
Answer: A plant’s energy comes from ________________ absorbed by _________________
How Are Plants and Animals Different?
Plants can make their own
food.
Plants have chlorophyll
·Animals cannot make their own
food.
·Animals do NOT have
chlorophyll (even green animals
don’t have it!)