WorksheetsPhotosynthesis 2024
Total questions: 32
Worksheet time: 16mins
Name
Class
Date
1.
The main source of energy for all life comes from
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
2.
Which organelle is involved in photosynthesis?
a)
lysosome
b)
nucleus
c)
chloroplast
d)
mitochondria
3.
What is the pigment that absorbs sunlight in plants?
a)
stomata
b)
chlorophyll
c)
carbon dioxide
d)
water
4.
Carbon dioxide enters the leaf through tiny holes called
a)
pores
b)
stomata
c)
chromes
d)
vents
5.
Water enters the plant through the
a)
leaves
b)
stomata
c)
roots
d)
chloroplasts
6.
Which two molecules are needed for photosynthesis to occur?
a)
water
b)
oxygen
c)
carbon dioxide
d)
hydrogen
7.
What is the name of the sugar produced in photosynthesis?
a)
sucrose
b)
fructose
c)
sacchrine
d)
glucose
8.
What do plants release into the atmosphere because they make too much of it?
a)
oxygen
b)
hydrogen
c)
water
d)
carbon
9.
Where does the extra gas that is produced by photosynthesis exit the plant?
a)
roots
b)
stem
c)
mitochondria
d)
stomata
10.
True or False? The reactants are what enter the plant.
a)
True
b)
False
11.
True or false? The products are what the plant needs to start photosynthesis.
a)
True
b)
False
12.
How many molecules of WATER does a plant need in order make one molecule of its food?
a)
2
b)
6
c)
4
d)
8
13.
How many molecules of CARBON DIOXIDE do plants need to make one molecule of its food?
a)
2
b)
6
c)
4
d)
8
14.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + Glucose + H2O --> O2 + Light
b)
6CO2 + 6H2O + Light --> 6O2 + Glucose
c)
3O2 + 6H2O + Light --> CO2 + Glucose
d)
CO2 + O2 + H2O --> Glucose + Light
15.
One reason it is necessary to have 6 molecules of water for photosynthesis to occur is because one molecule of water does not have enough hydrogen to create sugar.
a)
True
b)
False
16.
The chemical name for glucose is
a)
C₆H₁₂O₆
b)
H2O
c)
CO2
d)
O2
17.
Identify Letter A in the Photosynthesis Diagram.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Sun
e)
Water
18.
Identify Letter B in the Photosynthesis Diagram.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Sun
e)
Water
19.
Identify Letter C in the Photosynthesis Diagram.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Sun
e)
Water
20.
Identify Letter D in the Photosynthesis Diagram.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Sun
e)
Water
21.
Identify Letter E in the Photosynthesis Diagram.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Sun
e)
Water
22.
Identify Letter A as a molecule in the Photosynthesis Diagram.
a)
C₆H₁₂O₆
b)
CO₂
c)
H₂O
d)
Light
e)
O₂
23.
Identify Letter B as a molecule in the Photosynthesis Diagram.
a)
C₆H₁₂O₆
b)
CO₂
c)
H₂O
d)
Light
e)
O₂
24.
Identify Letter C as a molecule in the Photosynthesis Diagram.
a)
C₆H₁₂O₆
b)
CO₂
c)
H₂O
d)
Light
e)
O₂
25.
Identify Letter D as a molecule in the Photosynthesis Diagram.
a)
C₆H₁₂O₆
b)
CO₂
c)
H₂O
d)
Light
e)
O₂
26.
Identify Letter A in the molecular equation.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Light
e)
Water
27.
Identify Letter B in the molecular equation.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Light
e)
Water
28.
Identify Letter C in the molecular equation.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Light
e)
Water
29.
Identify Letter D in the molecular equation.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Light
e)
Water
30.
Identify Letter E in the molecular equation.
a)
Carbon Dioxide
b)
Glucose
c)
Oxygen
d)
Light
e)
Water
31.
How many molecules make up Letter A.
a)
six
b)
one
c)
two
d)
three
e)
four
32.
How many molecules make up Letter E.
a)
six
b)
one
c)
two
d)
three
e)
four
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