1. Photosynthesis or
How Plants Make Food

2. Energy from the Sun is necessary to begin the process.
Organisms that make their own food are called autotrophs. There are only a few organisms, other than green plants, that can do this.
Besides green plants, some algae and bacteria can also make their own food. Most of the Oxygen in the air comes from the blue-green algae in the Oceans.

3. Chlorophyll must also be present.
Radiant energy or AKA Solar energy from the Sun, in the form of light, begins photosynthesis.
Radiant energy is energy traveling in waves for example electromagnetic radiation, as heat, light, or x-rays.
All components of photosynthesis may be present, but without the plant pigment chlorophyll no photosynthesis will take place.
Chlorophyll must also be present.

4. Xylem is a series of tubes.
Water is taken into the plant by the roots and carried to the leaves through the xylem .
Introduce students to the terms xylem and phloem. They do not need to memorize these terms. Xylem is a series of tubes which carry water and minerals up to the leaves. Phloem is plant tissue that conducts and distributes sugars from the places where the food is produced to the places where it is needed or stored.
Xylem is a series of tubes.
H20
H20
H20

5. Carbon dioxide gas (CO2) is taken into the plant through the stomata on the underside of leaves.
To avoid misconceptions from developing, remind students that carbon dioxide is always in the air and that plants to not use all the CO2 available.
This is when glucose or Plant food, is made
H20
H20
H20

6. Oxygen gas (O2) is released into the atmosphere through the stomata on the under side of leaves.
Oxygen is a product of the process of photosynthesis.
H20
H20
H20

7. This process is called transpiration.
Water vapor is released into the atmosphere through the stomata on the leaves.
H20
H20
H20
Water in the form of vapor (gas) is a product of photosynthesis.
This process is called transpiration.

8. Explain each step as it is shown.
Review the process. O2
CO2
H20 O2
H20
H20 O2
CO2
CO2
H20
H20
H20
Explain each step as it is shown.

9. Remember, this process is continuous in light.
Add arrows to show the direction each object moves. Sounds like a test question!
CO2
H20
H20
H20

10. Explanation of Symbols: Reactants 6 molecules of water (6H2O)
Photosynthesis Equations Yes this is a test we will take on Friday 9/5
6H2O + 6CO C6H12O6 + 6O2
Explanation of Symbols:
Reactants
6 molecules of water (6H2O)
6 molecules of carbon dioxide (6CO2)
( with Chlorophyll and Radiant Energy)
Produce
1 molecule of sugar (C6H12O6)
6 molecules of oxygen (6O2)
Word Equation:
Six molecules of water plus six molecules of carbon dioxide, using light energy(Radiant Energy) and chlorophyll, produce one molecule of sugar(Glucose) plus six molecules of oxygen.

11. _____________________ ____________________ Explanation of Symbols:
Last Name ____________________________ First Name _______________________
Date ______________ Period _____________ Open note Daily Test.
Write the Photosynthesis Equations
_____________________ ____________________
Explanation of Symbols:
Reactants
6 molecules of ___________
6 molecules of____________
( with ______________ & ______________
Produce
1 molecule of________________
6 molecules of ______________

12. How to make a 100 Equations is 40 points if correct
if they almost got it right 20 points
Reactants and Produce are worth 10 points each