WorksheetsPhotosynthesis
Total questions: 23
Worksheet time: 12mins
Leaves look green because.....
they absorb green light
they do not absorb green light
they reflect red and blue light
they reflect UV light
The reactants of photosynthesis are
sunlight and chlorophyll
glucose and oxygen
carbon dioxide and water
sunlight and water
What are the two products of the light reactions that are needed for the calvin cycle?
ATP and CO2
NADPH and O2
NADPH and ATP
O2 and Glucose
Where do the light-independent reactions (Calvin cycle) take place?
thylakoid membrane
matrix
stroma
Photosynthesis takes place in the
Mitochondria
Chloroplasts
Cell walls
Cytoplasm
What happens to the rate of photosynthesis when light intensity (brightness) increases?
It decreases to zero
It increases indefinitely
It increases and then decreases
It increases and then levels off
For most plants, the rate of photosynthesis is fastest under which colors of light?
Green
Red and Blue
Yellow and Orange
UV light
Since plants photosynthesize, they do not do cellular respiration.
True
False
What is the source of oxygen that plants give off during photosynthesis?
CO2
Water
ATP
Sugar
What form of energy is produced during photosynthesis and available for cells to use during other processes?
Sugar
ATP
Oxygen
NADPH
Sunlight
How are the electrons that are released during photolysis (the splitting of water) energized?
They go through an electron transport system
They use ATP synthase
By sunlight hitting Photosystem 1 and 2
By going through the Calvin cycle
When does carbon fixation occur?
Krebs cycle
Calvin cycle
Light reactions
Glycolysis
If you keep a plant in a dark closet for several days, what will happen?
As long as there's fresh air, they'll perform the Calvin cycle.
They will continue to produce sugar.
They will produce ATP, but no sugar.
All reactions associated with photosynthesis will stop.
As plants grow, they gain mass. Where does this "mass" primarily come from?
O2 gas in the air
Water in the soil
Minerals in the soil
CO2 gas in the air
Sugar molecules in the soil
Under which conditions would you expect the rate of photosynthesis in a green plant to be highest?
Lots of CO2, bright green light
Lots of O2, bright blue light
Little CO2, bright red light
Little O2, bright green light
Lots of CO2, bright red light
All cells in green plants perform photosynthesis.
True
False
All cells in green plants perform cellular respiration.
True
False
