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Photosynthesis Review

Total questions: 31

Worksheet time: 16mins

Name
Class
Date
1.
What chemical found in plant cells is able to use the energy in sunlight to make food?
a)
cytoplasm
b)
chlorophyll
c)
lactic acid
d)
sulfuric acid
2.

Which natural resources do plants need to make their own food? Choose all that apply.

a)

Sunlight

b)

Oxygen

c)

Water

d)

Carbon Dioxide

3.

Carbon dioxide enters a plant through the leaves' _____________.

a)

stomata

b)

xylem

c)

phylem

d)

roots

e)

chlorophyll

4.

What is made by a plant during photosynthesis?

a)

carbon dioxide, glucose

b)

oxygen, glucose

c)

carbon dioxide, water

d)

oxygen, water

5.

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

6.

What are the small openings on the bottom epidermal layer of most leaves?

a)

mesophyll

b)

epidermal

c)

stomata

d)

chlorophyll

7.

Why do plants appear green?

a)

Chlorophyll absorbs green light

b)

Because they are green

c)

Chlorophyll reflects green light

d)

Because of the water

8.

Why is photosynthesis important?

a)

Plants provide us with oxygen to breathe

b)

Plants take in oxygen from the environment

c)

Plants provide us with food

d)

Plants take in carbon dioxide from the environment

9.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
10.

In the overall photosynthetic reaction, there are two reactants. Which one is used in the Calvin Cycle?

a)

water

b)

carbon dioxide

c)

oxygen

d)

glucose

11.

What does light do when it strikes the chlorophyll molecules of photosystems I and II?

a)

Light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.

b)

Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.

c)

Light causes the conversion of water into carbon dioxide, oxygen, and electrons.

d)

Light directly causes carbon dioxide to attach to RuBP during the carbon fixation stage of the Calvin Cycle.

12.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
13.
It is important to create a concentration of H+  in the thylakoid space so that the H+ can diffuse through_________ to create ______.
a)
ATP synthase, ATP
b)
NADH, NADPH
c)
proton pump, protons
14.

Which of the following is true?

a)

PS1 comes before PSII

b)

PSII comes before PS1

15.
What is the ultimate source of energy for life on Earth?
a)
glucose
b)
sunlight
c)
ATP
d)
H2O
16.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
17.

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

18.

During what time of day can the light dependent reactions take place?

a)

Day time

b)

Night time

c)

Both

19.

During what time of day can the light independent reactions take place?

a)

Day time

b)

Night time

c)

Both

20.

Which answer below shows the outputs of photosynthesis?

a)

CO2, H2O

b)

CO2, C6H12O6

c)

O2, H2O

d)

O2, C6H12O6

21.

What does ATP and NADPH do for the plant?

a)

Get split to produce oxygen gas

b)

Turn into sugar

c)

Serve as building blocks for all plant structures

d)

provide energy for creation of sugar

22.

Oxygen is produced during which stage of photosynthesis?

a)

Light Dependent Reactions

b)

Light Independent Reactions

23.

Any organism that can create its own food is known as what?

a)

Heterotroph

b)

Consumer

c)

Autotroph

d)

Decomposer

24.

Photosynthesis is how most autotrophs create their food. What other method can be used by autotrophs?

a)

Predator Prey

b)

Consume food from an outside source

c)

Chemosynthesis breaks down inorganic substances

d)

Transpiration uses water to make food for the organism

25.

True or False: Both plants and animals perform photosynthesis.

a)

True

b)

False

26.
Where does the water come from that goes into the plant for photosynthesis?
a)
from the ground through the roots
b)
from the leaves
c)
from the petals of the flower
d)
"inhales" from the air
27.
Where does the carbon dioxide come from that goes into the plant for photosynthesis?
a)
from the ground through the roots
b)
"inhales" through the leaves
c)
from the petals of the flower
d)
makes it internally
28.
What is the oxygen that comes out of photosynthesis used for?
a)
energy for the plant to function
b)
to allow the plant to move around
c)
it is extra and released to the environment/air
d)
to turn the flower different colors
29.
According to our graph, which color of light is REFLECTED most by the plant (the least O2)?
a)
blue
b)
green
c)
orange
d)
red
30.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

CO2 + O2 + H2O --> Light+ Sugar

b)

O2 + light + H2O --> CO2 + Sugar

c)

CO2 + H2O + light --> O2 + Sugar

d)

CO2 + sugar + H2O --> O2 + light

31.
Chlorophyll absorbs a higher percentage of _____ and _______ light.
a)
purple and green
b)
red and blue
c)
black and orange
d)
yellow and green

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