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Worksheetsphotosynthesis 1
Total questions: 23
Worksheet time: 12mins
The main source of energy for all life comes from ____.
the Earth
the moon
the sun
the food we eat/make
Most plants appear green because chlorophyll
absorbs green light.
reflects green light.
absorbs violet light.
does not absorb violet light.
The reactants of photosynthesis are
sugar and water.
sugar and oxygen.
carbon dioxide and water.
carbon dioxide and oxygen.
Which statement about photosynthesis is correct?
Plants get the energy they need for photosynthesis from water.
Plants get the energy they need for photosynthesis from soil.
Plants get the energy they need for photosynthesis from sunlight.
Plants do not require energy to perform photosynthesis.
What are the products of photosynthesis?
Carbon dioxide and water
Carbon dioxide and oxygen
Glucose, water and oxygen
Glucose and water
What pigment absorbs sunlight for photosynthesis?
chloroplast
grana
thylakoid
chlorophyll
Which of the following is the correct equation for PHOTOSYNTHESIS?
6CO2 + 12H2O --> 6O2 + C6H12O6 + 6H2O
6CO2 + C6H12O6 + 6H2O --> O2
C6H12O6 + 6O2 --> 6H2O + 6CO2
6O2 + 6H2O --> 6CO2 + C6H12O6
Which gas is removed from the atmosphere during photosynthesis?
hydrogen
oxygen
nitrogen
carbon dioxide
In this drawing of a chloroplast, which structure represents the thylakoid membrane?
structure A
structure B
structure C
structure D
structure E
How do H+ ions make their way from the stroma to the thylakoid interior?
directly through the phospholipids of the thylakoid membrane
through an electron transport chain molecule
through the ATP synthase
through photosystem II
through photosystem
Which of the following statements regarding photosynthesis and carbon dioxide is false?
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.
Burning wood contributes more to acid rain than burning fossil fuels.
Plants require carbon dioxide, water, and sunlight to make glucose.
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.
What is the name given to organisms that can make their own food and the food for the biosphere?
heterotrophs
manufacturers
synthesizers
chemotrophs
producers
Photoautotrophs
make sugar by using organic raw materials.
are only found on land.
eat other organisms that use light energy to make food molecules.
include only the green plants.
produce organic molecules from inorganic molecules.
In most green plants, chloroplasts are
concentrated in the stomata.
concentrated in a zone of leaf tissue called the mesophyll.
concentrated in a portion of the leaf called the stroma.
found throughout the plant.
found throughout the leaf tissue.
________ cells in leaves are specialized for photosynthesis.
Sclerenchyma
Companion
Mesophyll
Collenchyma
Tracheid
CO2 enters and O2 escapes from a leaf via
grana.
central vacuoles.
stomata.
stroma.
thylakoids.
Chloroplasts contain disklike membranous sacs arranged in stacks called
cristae.
stroma.
grana.
vacuoles.
thylakoids.
Where is chlorophyll found in a plant cell?
stroma
cristae
thylakoid membranes
matrix
cytoplasm
The oxygen released into the air as a product of photosynthesis comes from
mitochondria.
carbon dioxide.
glucose.
chlorophyll.
water.
Which of the following molecules is both a reactant and a product of photosynthesis?
CO2
H2O
glucose
chlorophyll
O2
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 in water; O in glucose
H in glucose and water; O in O2
H in glucose and water; O in water and O2
H and O both in glucose
H in glucose; O in water
What is the source of energy that provides the boost for electrons during photosynthesis?
cellular respiration
electromagnetism
ATP
light
glucose
Which of the following statements regarding photosynthesis is false ?
Photosynthesis consumes CO2; respiration consumes O2.
Photosynthesis produces O2; respiration produces CO2.
The principal electron carrier in photosynthesis is NADPH; the principal electron carrier in respiration is NADH.
Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules.
ATP is not produced during photosynthesis, but only during respiration.
