Photosynthesis Part 3

Photosynthesis

Photosynthesis

•CO2 enters the leaf through small
openings called the stoma (plural:
stomata)

•On either side of the stoma are guard
cells, which control the opening and
closing of the stoma

•Green plants remove tons of CO2 from
the atmosphere

Carbon Dioxide

Multiple Select

What three things do green plants need to make their own food?

• Water

• Oxygen

• Carbon dioxide

• Sun light

• Glucose

Multiple Select

What are the structures in the leaf that allows needed things for the photosynthesis process?

• Xylem

• Trunk

• Chlorophyll

• Stomata

• Glucose

Open Ended

Describe a real-life situation in which the plant might have too much H₂0 or CO₂ or sunlight but not enough to carry out the photosynthesis process.

Photosynthesis

•The ingredients for making food in a green plant can be
written in a chemical equation

•The first part of the photosynthesis equation is written below.
These ingredients are called the reactants because they
cause a chemical reaction

6CO2 + 6H20

Remember the small number represents the number of atoms, and the large

number represents the number of molecules.

carbon
dioxide

water

Equation

energy from the sun

Multiple Choice

The first part of the equation is called the

• products

• reactants

• oxygen

• producers

Photosynthesis

Two products are made during Photosynthesis. The products
are the result of the chemical reaction.

1.

Sugar (in the form of glucose)

2.

Oxygen (Yay! Just what we need!)

Remember the small number represents the number of atoms, and the large

number represents the number of molecules.

Equation

C6H12O6
+

6O2

sugar

oxygen

Multiple Select

Which of the following are the products of the photosynthesis process?

• Glucose $$C_6H_{12}O_6$$

• Water $$H_2O$$

• Oxygen $$O_2$$

• Carbon dioxide $$CO_2$$

Photosynthesis

•Transported around the plant as soluble
sugar

•Plants can turn glucose into starch for
storage

•Cells walls in plants are made of starches

•Plants also use starches as a source of
fuel

Glucose (Sugar)

Match

Match the following

• Carbon dioxide

• Oxygen

• Sun Light

• $$C_6H_{12}O_6$$

• $$H_2O$$

CO2

O2

Radiant energy

Glucose

Water

• CO2

• O2

• Radiant energy

• Glucose

• Water

Photosynthesis

CO2

O2

•Oxygen is a byproduct released during
photosynthesis

•The O2 moves out of the plant through
the stomata

•The process of photosynthesis puts tons
of oxygen back into our atmosphere

Oxygen

Open Ended

What does the word “byproduct” mean?