Name
Section
Date
Photosynthesis Review
Vocabulary: Please define all of these to receive full credit.
Autotroph
Grana
Spongy layer
Chloroplasts
Guard cells
Stomata
Chlorophyll
Light reaction
Stroma
Light independent reaction
Photosynthesis
Thylakoid
(aka Calvin Cycle)
Epidermis
Transpiration
Phloem
Accessory pigments
Xylem
Key Concepts:
1.
What three things do plant cells need to perform photosynthesis?
2.
What energy-rich molecule do plants make during photosynthesis?
3.
What type of gas is produced as a waste product during photosynthesis?
4.
What pigment makes plants look green?
5.
TRUE or FALSE
Green plants only have one pigment. If false, explain why. (Hint: Think about our lab.)
6.
Why are pigments important to plants?
7.
Where does photosynthesis happen in the leaf?
a.
epidermis
d.
palisade cells
b.
spongy layer
e.
stoma
8.
Where does photosynthesis happen in the cell?
9.
Animals that consume plants and other animals for energy are known as
A. autotrophs
B. heterotrophs
C. both autotrophs and heterotrophs
D. none of the above
1
10.
Draw a picture of a chloroplast and label the following structures. Please also add all of the
reactants and products of the reaction and place them in their appropriate places, based on the reactions
they are involved with.
outer membrane, inner membrane, grana, thylakoid, stroma
11.
Trace the pathway of water from the ground to a leaf by completing the following sentence.
Water is absorbed from the soil through the
travels through the stem inside the vessels called
. The water
.
12.
How do leaves absorb carbon dioxide?
13.
How do plants stop leaves from losing water?
14.
What two molecules are made to store energy during the light reaction?
15.
What molecule is split in half to produce oxygen and hydrogen during
the light reaction?
16.
What two things are used to make glucose during the dark reaction?
17.
Where does the energy come from to make glucose?
2
18.
Compare photosynthesis and respiration by matching the following
descriptions with the correct process.
P
photosynthesis
C
cellular respiration
Makes glucose to store energy.
Happens inside chloroplasts.
Makes ATP for cell work.
Uses oxygen.
Both plants and animals do this.
Uses light.
Makes carbon dioxide and water.
Only plants do this.
Happen inside mitochondria.
Uses carbon dioxide and water.
Makes oxygen.
19.
Plants gather the sun’s energy with light-absorbing MOLECULES called __________________.
A. thylakoids
B. pigments
C. chloroplasts
D. glucose
20.
Chlorophyll absorbs light very well in the _______________ regions of the visible spectrum.
(Circle all that are true)
A. blue-violet
B. green
C. red
D. yellow
21.
Most plants appear green because chlorophyll _________________________________________.
A. reflects green light
B. absorbs green light
22.
A student conducts an experiment by collecting the gas given off by a green plant in bright sunlight
at room temperature. The gas being collected is probably ___________________.
A. ATP
B. water vapor
C. carbon dioxide
D. oxygen
23.
How many molecules of carbon dioxide (CO2) are used to make 1 molecule of glucose (C6H12O6) ?
1
2
3
6
3
12
24.
In addition to water and carbon dioxide, what two things are required for photosynthesis to happen?
_______________________ and _______________________
REACTIONS OF PHOTOSYNTHESIS
MULTIPLE CHOICE: Circle the letter of the answer that best completes the statement or answers the
question.
25.
The Calvin cycle is another name for __________________________
A. photosynthesis
B. the electron transport chain
C. light-dependent reactions
D. light-independent reactions
26.
How is the Calvin cycle different from the light-dependent reactions?
A. It takes place in chloroplasts.
B. It takes place in the stroma.
C. It requires light.
D. It takes place in the thylakoid membrane
27.
Oxygen produced during the light-dependent reaction is __________________________.
A. used in the Calvin cycle to make sugar
B. is released into the atmosphere
C. None of these, oxygen is NOT produced by the light-dependent reaction
28.
Name 2 factors that affect the rate at which photosynthesis occurs. Think about the leaf disk lab.
1. ___________________________
2. ___________________________
USE THE LETTERS IN THE DIAGRAM AT THE LEFT TO
IDENTIFY:
______ stroma
______ thylakoid
______ granum
29.
USE WORDS FROM THE WORD BANK TO FILL IN THE CHART COMPARING AND CONTRASTING
THE LIGHT-DEPENDENT REACTIONS AND THE CALVIN CYCLE: (You can use them more than once!)
4
in stroma
Requires light
in thylakoid membrane
O2
ATP
CO2
H 2O
NADPH
Doesn’t require light SUGARS (glucose)
LIGHT-DEPENDENT REACTIONS
LOCATION
REACTANTS
PRODUCTS
LIGHT REQUIRED?
5
CALVIN CYCLE (LIGHT
INDEPENDENT REACTIONS)