Ch 7 Practice Test Quizizz

Which statement regarding photosynthesis and CO2 is FALSE?

• Plants require carbon dioxide, water, and sunlight to make glucose.

• Burning wood contributes more to acid rain than burning fossil fuels.

• Because of their short growth period and self-regeneration, willows are more viable as a source of

  potential power than the trees in most natural forests.

• Most of the food humans eat can be traced back to photosynthetic plants.

• Burning fossil fuels release carbon dioxide that was removed from the atmosphere millions of years ago.

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Photoautotrophs...

• produce organic molecules from inorganic molecules.

• are only found on land.

• make sugar by using organic raw materials.

• include only the green plants.

• eat other organisms that use light energy to make food molecules.

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Autotrophs that utilize light as their energy source are

• consumers.

• heterotrophs.

• photoautotrophs.

• chemosynthetic autotrophs.

• fungi.

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________ cells in leaves are specialized for photosynthesis.

• Mesophyll

• Tracheid

• Collenchyma

• Companion

• Sclerenchyma

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In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the

• stomata.

• thylakoid.

• stroma.

• mesophyll.

• matrix.

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Chloroplasts contain disklike membranous sacs arranged in stacks called

• grana.

• stroma.

• thylakoids.

• vacuoles.

• cristae.

Which of the following molecules is both a reactant and a product of photosynthesis?

• glucose

• H2O

• chlorophyll

• CO2

• O2

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If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?

• H and O both in glucose

• H in water; O in glucose

• H in glucose; O in water

• H in glucose and water; O in water and O2

• H in glucose and water; O in O2

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A redox reaction involves the transfer of

• a hydrogen ion.

• an electron.

• oxygen.

• carbon dioxide.

• water.

The light reactions occur in the ________, while the Calvin cycle occurs in the ________.

• cytoplasm . . . stroma

• cytoplasm . . . thylakoid membrane

• thylakoid membranes . . . stroma

• troma . . . thylakoid membranes

• stroma . . . nucleus

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