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Photosynthesis: Light and Dark Reactions

Total questions: 25

Worksheet time: 28mins

Name
Class
Date
1.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

6CO2 + light + 6H2O --> 6O2 + glucose

b)

6CO2 + sugar + 6H2O --> 6O2 + light

c)

6O2+ light + 6H2O --> 6CO2 + Sugar

d)

6CO2 + 6O2 + 6H2O --> Light + Sugar

2.

What three things are required for photosynthesis?

a)

carbon dioxide, oxygen, water

b)

oxygen, water, sunlight

c)

water, sunlight, glucose

d)

carbon dioxide, water, sunlight

3.

What are the products of photosynthesis?

a)

carbon dioxide

b)

water

c)

glucose

d)

oxygen

4.

Where do plants get their energy for photosynthesis?

a)

Inorganic chemicals in the soil

b)

Carbon DIoxide

c)

Sunlight

d)

Water

5.
In what part of a plant does the process of photosynthesis occur?
a)
flower
b)
xylem
c)
leaves
d)
roots
6.

What is the name of the green pigment that traps light energy for photosynthesis?

a)

Chlorophyll

b)

Green pigment

c)

Chloroplasts

d)

Mucus

7.

Carbon dioxide enters a plant through the leaves' _____________.

a)

stomata

b)

xylem

c)

phylem

d)

roots

e)

chlorophyll

8.

In what organelle does photosynthesis take place?

a)

Mitochondria

b)

Lysosome

c)

Chloroplast

d)

Chlorophyll

9.

Where do the light dependent reactions happen?

a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
10.

ATP and NADPH are made in the _______________ and used in the _________________

a)

Stroma, Chlorophyll

b)

Calvin cycle, Krebs cycle

c)

dark reactions, light reactions

d)

light dependent reactions, light independent reactions

11.

Where in the chloroplast does the dark reaction/ light-independent reaction/ Calvin Cycle take place?

a)

thylakoids

b)

matrix

c)

stroma

d)

nucleus

12.

In the overall photosynthetic reaction, there are two reactants. Which one is used in the dark reaction/ light-independent reaction/ Calvin Cycle?

a)

water

b)

carbon dioxide

c)

oxygen

d)

glucose

13.

What happens to NADPH and ATP after they are used in the dark reaction/ light-independent reaction/ Calvin Cycle?

a)

They recycle back to the light reactions

b)

They are used up

c)

They diffuse out of the chloroplast

14.

What substance is the source of carbon in photosynthesis?

a)

H20

b)

CO2

c)

C6H12O6

d)

Sunlight

15.

How many glucose molecules are made at a time through the process of photosynthesis?

a)

1

b)

3

c)

6

d)

12

16.

How many carbon dioxide molecules do you need to start the process of photosynthesis?

a)

1

b)

3

c)

6

d)

12

17.
Which of these organisms does NOT perform photosynthesis?
a)
animal
b)
plant
c)
some protists
d)
some bacteria
18.
During photosynthesis, light energy is converted into _______ energy stored in the bonds of the glucose molecule.
a)
Kinetic
b)
Gravitational
c)
Radiant 
d)
Chemical
19.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
20.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
21.
In the ________________________, energy from the sun is used to make ATP 
a)
light-independent reaction
b)
dark reaction
c)
light-dependent reaction
d)
Calvin cycle
22.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

23.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
24.

Which part of the plant cell enables photosynthesis?

a)

Vacuole

b)

Chloroplast

c)

Cell Wall

d)

Chlorophyll

25.

What are the reactants to the Light Reactions?

a)

Sunlight and Water

b)

Sunlight and Oxygen

c)

Oxygen and Water

d)

Sunlight and Carbon Dioxide

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