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WorksheetsPhotosynthesis
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
The heterotroph hypothesis explains
a)
how life on earth began
b)
how plants first evolved from heterotrophs
c)
how heterotrophs went extinct
d)
how heterotrophs evolved from plants
2.
What is the correct equation for photosynthesis?
a)
C6H12O6 + 6O2 --> 6CO2 + 6H2O
b)
6CO2 + 6O2 --> C6H12O6 + 6H2O
c)
6CO2 + 6O2 --> 6H2O + C6H12O6
d)
6CO2 + 6H2O --> 6O2 + C6H12O6
3.
What do the carbon reactions produce?
a)
O2, H2O, CO2
b)
ATP, Glucose, H2O
c)
NADPH, ATP, O2
d)
Glucose, NADP+, ADP + P
4.
What do the light reactions produce?
a)
ATP, NADPH, O2
b)
H2O, O2, Glucose
c)
NADP+, ADP + P, O2
d)
NADPH, H2O, ATP
5.
What leaf structure prevents water loss?
a)
spongy mesophyll
b)
cuticle
c)
stoma
d)
phloem
6.
What tissue contains cells where the majority of photosynthesis takes place?
a)
spongy mesophyll
b)
palisade mesophyll
c)
upper epidermis
d)
guard cells
7.
What can change shape to open and close the stoma?
a)
guard cells
b)
xylem
c)
phloem
d)
vascular bundle
8.
After sugars are formed in photosynthesis, what structure do they travel through to reach the fruits of the plant?
a)
xylem
b)
cuticle
c)
phloem
d)
roots
9.
What type of solutions would cause a guard cell to open?
a)
hypotonic
b)
hypertonic
10.
Which of the following environmental conditions would cause the stomata to close?
a)
Low CO2 level
b)
Rain
c)
K+ moving into the guard cells
d)
darkness
11.
What group of pigments break down later in the year and give leaves their orange, red, and yellow colors?
a)
carotenoids
b)
chlorophyll a
c)
chlorophyll b
d)
rhodopsin
12.
What color of light provides the most energy to a plant?
a)
orange
b)
red
c)
blue
d)
green
13.
What color of light reflects off of chlorophyll?
a)
orange
b)
red
c)
blue
d)
green
14.
Where do the light reactions take place inside a chloroplast?
a)
stroma
b)
lamellae
c)
chloroplast membrane
d)
thylakoid membrane
15.
What is produced in the stroma?
a)
ATP
b)
glucose/G3P
c)
O2
d)
CO2
16.
How do C4 plants prevent photorespiration?
a)
they close the stomata during the day
b)
they fix CO2 during the night
c)
they fix CO2 in a cell that does not contain RubisCO
d)
they fix CO2 in the guard cells
17.
Why do CAM plants grow much slower than other plants?
a)
they live in areas that do not have a lot of sunlight
b)
they live in areas that do not have a lot of water
c)
they can only fix CO2 during the night hours
d)
they can only fix CO2 during the day hours
18.
What enzyme fixes CO2 in C4 and CAM plants?
a)
ATP synthase
b)
rubisCO
c)
PEP carboxylase
d)
lactase
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