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Worksheets2.9 Photosynthesis MCQS
Total questions: 29
Worksheet time: 29mins
The products of photosynthesis include
water and carbon dioxide.
glucose and oxygen.
oxygen and carbon dioxide.
carbon dioxide and glucose.
The energy that drives photosynthesis comes from
the sun.
geothermal heat.
muscle contractions.
chemical energy.
Light dependent reactions use light energy to produce
ATP and oxygen.
carbon dioxide.
water and oxygen.
glucose.
Longer wavelengths are at the _______ end of the visible light spectrum.
blue
red
This graph could represent (check all that apply:
The effect of light intensity on the rate of photosynthesis.
The effect of carbon dioxide concentration on the rate of photosynthesis.
The effect of temperature on the rate of photosynthesis.
The plateau on this graph is due to
another limiting factor is limiting rate of photosynthesis.
the light is becoming too bright for photosynthesis to occur.
the optimum light intensity has been reached.
T/F: If control variables limit photosynthesis, it may not be possible to see the impact of the limiting factor being investigated.
true
false
Select the two REACTANTS of photosynthesis.
oxygen
carbon dioxide
glucose
water
Select the two PRODUCTS of photosynthesis.
oxygen
carbon dioxide
glucose
water
The graph shows the relationship between rate of photosynthesis and light intensity as influenced by both temperature and CO2 concentration.
What conclusion can be drawn from the data in the graph?
CO2 is always the limiting factor at low light intensities and temperatures.
Light intensity is only the limiting factor at high light intensities
Temperature is only the limiting factor at high light intensities and CO2
concentrations.
Both temperature and light intensity are limiting factors at 660 ppm CO2 and
less than 200 W m–2 light intensity.
What are final products of photosynthesis and of aerobic respiration?
A
B
C
D
What is the relative wavelength in the visible spectrum of red light and blue light and are these colours absorbed or reflected by chlorophyll?
A
B
C
D
The graph shows the effect of increasing light intensity on the rate of CO2 [1 mark] uptake by a species of green plant maintained in conditions of constant temperature and CO2 concentration. Which statement is consistent with the graph?
Photosynthesis stops at high light intensity
Rates of photosynthesis increase with temperature.
Cell respiration leads to net production of CO2 at low light intensity.
There is a negative correlation between CO2 uptake and light intensity.
How can the rate of photosynthesis be measured?
A
B
C
D
What is a feature of shorter wavelength visible radiation?
A
B
C
D
An experiment was set up so that each test tube contained water at a pH [1 mark] of 6.3 and a pH indicator. Test tubes 1 and 2 also contained a common
pond autotroph. Carbon dioxide dissolves in water and forms carbonic acid. After three days the four test tubes were found to have these results. What conclusion can be drawn from test tube 1 and test tube 2?
A
B
C
D
The graph shows the absorption spectra of chlorophyll a and chlorophyll b. What can be concluded from the graph?
Both chlorophyll a and chlorophyll b absorb a large amount of green light
Chlorophyll b absorbs red light more efficiently than blue light
Other pigments must absorb light between blue and red in the spectrum
Chlorophyll a and chlorophyll b have different absorption peaks
Light independent reactions use ATP and H+ to fix _______ to make ______.
oxygen; glucose
carbon dioxide, glucose
oxygen; water
carbon dioxide; water
Light energy splits a water molecule into 4H+, 4e-, and O2 in a process called
photolysis.
hydrolysis.
oxidation.
reduction.
The action spectrum represents the
rate of photosynthesis.
absorbance of light.
Light energy is used to......
split water into H and O
fix C, H and O together
warm plants up
during the light independent reactions of photosynthesis
A leaf is green. What does this tell you about the light that is being absorbed?
The light is a UV ray.
The light is not a part of the light spectrum.
All colors are reflected except green.
All colors are absorbed except green
What is the function of NADPH and ATP?
They absorb light
They power the light-dependent reactions
They are light-reflecting pigments
They are short term energy carriers
Which of the following is NOT a product of the light-dependent reactions?
ATP
NADPH
Oxygen
Glucose
Which of the following best describes photosynthesis?
Photosynthesis converts radiant energy into chemical energy.
Photosynthesis produces carbohydrates.
Plants need sunlight, carbon dioxide, water, nutrients, and chlorophyll to complete photosynthesis.
Plants use chlorophyll, water, and carbon dioxide to make sugar.
The order of the colors of light that chlorophyll absorbs best is (list from greatest to least)
blue, red, green
red, blue, green
green, red, blue
red, green, blue
