WorksheetsPhotosynthesis
Total questions: 22
Worksheet time: 11mins
Organisms, such as plants, that make their own food are called
autotrophs
heterotrophs
thylakoids
pigments
Organisms that cannot make their own food and must obtain energy from external sources are called
autotrophs
heterotrophs
thylakoids
plants
Which of the following organisms makes its own food using light energy from the sun?
mushroom
tapeworm
cheetah
oak tree
Which of the following organisms is a heterotroph?
mushroom
green algae
wheat
sunflower
What happens during photosynthesis?
Heterotrophs consume ATP.
Heterotrophs produce ATP.
Autotrophs consume carbohydrates (sugars).
Autotrophs produce carbohydrates (sugars).
Plants gather energy with light-absorbing molecules called
pigments
thylakoids
chloroplasts
glucose
Plants gather energy they need for photosynthesis by absorbing
high-energy sugars
chlorophyll a
chlorophyll b
sunlight
Most plants appear green because chlorophyll
absorbs green light
absorbs violet light
does not absorb green light
does not absorb violet light
A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27oC. The gas being collected is probably
oxygen
carbon dioxide
ATP
glucose
Photosynthesis uses sunlight to convert water and carbon dioxide into
oxygen and carbon
high-energy sugars and proteins
ATP and oxygen
oxygen and high-energy sugars
Which of the following is NOT found in the overall reaction for photosynthesis?
carbon dioxide
water
light
nitrogen
What is a product of the Calvin cycle?
oxygen gas
ATP
high-energy sugars
carbon dioxide gas
If carbon dioxide is completely removed from a plant's environment, what would you expect to happen to the plant's production of high-energy sugars?
More sugars will be produced.
No sugars will be produced.
The same number of sugars will be produced but without carbon dioxide.
Fewer sugars will be produced at first, but then the plant will recover.
Nancy is explaining why chlorophyll is classified as a plant pigment and how it is useful in photosynthesis. Which property of chlorophyll would be most appropriate for her to cite?
chlorophyll's ability to absorb light
chlorophyll's green color
chlorophyll's presence in chloroplasts
chlorophyll's reactivity with oxygen
Which BEST describes the role of light in the overall process of photosynthesis?
Light provides the energy for breaking apart sugars into small molecules.
Light provides the energy for assembling (making) small molecules into sugars.
Light accepts the energy that is released by small molecules.
Light accepts the energy that is released by sugars.
Look at the equation above. What are the REACTANTS for photosynthesis?
carbon dioxide, light, and oxygen
oxygen and glucose (sugar)
carbon dioxide, water, and light
light, glucose (sugar), and oxygen
Look at the equation above. What are the PRODUCTS of photosynthesis?
carbon dioxide, light, and oxygen
oxygen and glucose (sugar)
carbon dioxide, water, and light
light, glucose (sugar), and oxygen
In the picture above, why might the candle in jar A burn longer than the candle in jar B?
Carbon dioxide produced by the plant allows the candle to burn longer.
Chlorophyll produced by the plant allows the candle to burn longer.
Glucose produced by the plant allows the candle to burn longer.
Oxygen produced by the plant allows the candle to burn longer.
In the picture above, which experimental setup would you expect the Elodea plant inside the test tube to produce the LEAST amount of oxygen?
A
B
C
D
According to the graph above, the rate of photosynthesis in shade and sun plants DECREASES and then levels off as light intensity increases.
True
False
Which of the following organisms from the food web above are AUTOTROPHS?
pond plants only
phytoplankton only
pond plants and phytoplankton
All organisms are autotrophs
Which of the organisms from the food web above are HETEROTROPHS?
only snails, insects, and fish
pond plants
phytoplankton
snails, insects, fish, ducks, and turtles
