WorksheetsC3 Cam and C4 Plants
Total questions: 19
Worksheet time: 40mins
What does cam plants store
H20
CO2
Sunlight
Carbon Dioxide
what part of the chloroplast does the Calvin cycle take place
outer membrane
thylakoid
stroma
inner membrane
Cam plants have a different adaptation to what climate
cold and wet
hot and dry
both
none of the above
Why do CAM plants open their stomata at night
It just happens
To take in oxygen
To collect Carbon Dioxide
None of the above
In C4 plants, the Calvin cycle....
Takes place at night
Only occurs when the stomata are closed
Takes place in the mesophyll
Takes place in the bundle-sheath cells
What are C3 plants?
These plants are the best when it comes to storing water due to their extremely dry environments
These plants mostly just reduce the rate of photorespiration
plants that do the calvin cycle in the mesophyll cells
In C3 photosynthesis, the reactions that require ATP take place in
the light reactions alone
the calvin cycle only
both the light reactions and the calvin cycle
the citric acid cycle
CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they
fix CO2 into organic acids during the night when temperatures are cooler.
fix CO2 into by combining it with RuBP in the Calvin cycle.
obtain CO2 through their roots during the day.
fix CO2 into organic acids in the mesophyll cells, which do not rely on stomata.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
RuBisCo
PEP Carboxylase
Hexokinase
Pyruvate DeHydrogenase
The main problem encountered by C3 plants in hot conditions is:
Transpiration
PhotoRespiration
Dehydration
Starvation
This leaf structure regulates the opening and closing of stomata.
guard cell
chlorophyll
oxygen
Which of these would be considered a C4 Pathway plant?
cactus
sugar cane
oak tree
aglae
Which of these would be considered a CAM pathway plant?
cactus
corn
elm tree
algae
On hot, dry days, C3 plants shift into this less efficient process because O2 levels rise.
Photorespiration
Photosynthesis
Photoabsorption
Photoreactivity
Which part of the leaf is involved in conserving water in dry conditions?
stroma
chloroplast
veins
stomata
_____ plants like cacti, succulents, and pineapple only open their stomata for CO2 uptake at night.
C3
C4
CAM
Which type of plant fixes carbon only at night?
C3
C4
CAM
all of these
oxygen becomes attached to RuBP during...
C3 pathway
C4 pathway
Calvin-Benson Cycle
Photorespiration
which is a false statement about C4 light independent reactions?
called photorespiration
used by corn and sugar cane
closes stomata on hot days
produces PEP
