WorksheetsSci7: Photosynthesis Practice
Total questions: 41
Worksheet time: 1hrs 23mins
What is the main function of chloroplasts in plant cells?
To store water
To capture energy from the sun for photosynthesis
To absorb nutrients from the soil
To protect the plant from insects
Which of the following is NOT a raw material needed for photosynthesis?
Water
Oxygen
Carbon Dioxide
Sunlight
What does the term "photosynthesis" mean based on its Greek roots?
Light creation
Light absorption
Light putting together
Light transformation
What is the significance of stomata in the process of photosynthesis?
They release glucose
They absorb sunlight
They allow gas exchange
They store chlorophyll
What are the two key products of photosynthesis?
Oxygen and Carbon Dioxide
Glucose and Water
Oxygen and Glucose
Carbon Dioxide and Water
Which of the following is a chemical equation for photosynthesis?
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
C6H12O6 + 6O2 → 6CO2 + 6H2O + light energy
6O2 + C6H12O6 → 6CO2 + 6H2O
6H2O + 6O2 → C6H12O6 + 6CO2
How does photosynthesis contribute to the ecosystem?
It decreases oxygen levels
It provides food energy and oxygen
It absorbs carbon dioxide only
It releases carbon dioxide
What is the primary source of energy for photosynthesis?
Radiant energy/sunlight
Carbon dioxide
Oxygen
Water
What are the two main products created during photosynthesis?
Sunlight and water
Oxygen and glucose
Carbon dioxide and chlorophyll
Chlorophyll and water
What is the role of chlorophyll in photosynthesis?
Chlorophyll absorbs sunlight and uses it to power the chemical reaction.
Chlorophyll helps plants absorb water from the soil.
Chlorophyll is a type of sugar that plants use for energy.
Chlorophyll is a gas released into the atmosphere during photosynthesis.
What is the main point of photosynthesis?
To produce oxygen for animals to breathe
To turn glucose into sunlight
To convert sunlight into chemical energy (food)
To break down food for energy
What is the difference between an autotroph and a heterotroph?
Autotrophs make their own food while heterotrophs must ingest food
Heterotrophs make their own food while autotrophs must ingest their food
Where does a plant get the energy necessary to drive the chemical reaction in photosynthesis?
From the soil
From sunlight
From water
From oxygen
Match the three main ingredients that plants need for photosynthesis to occur and where they come from.
Water
Absorbed from the roots in the soil
Carbon dioxide
From the air enters through the stomata
Radiant energy
From sunlight
Producers use photosynthesis to create food, which is then passed through the food chain. What would happen to an ecosystem if all producers suddenly disappeared? How would this affect consumers at different levels of the food chain?
The ecosystem would remain stable.
Consumers would find alternative food sources.
Consumers at all levels would eventually die off.
Producers would quickly regenerate.
A student is looking at cells under the microscope. They do not observe chloroplasts in the tissue sample. Will this organism be able to perform photosynthesis? Why/why not?
Yes, because chloroplasts are not needed for photosynthesis.
No, because chloroplasts are essential for photosynthesis.
Yes, because photosynthesis occurs in the mitochondria.
No, because photosynthesis can only occur in animals.
Would you expect a plant to produce less oxygen on a sunny day or a cloudy day? Explain.
Sunny day, because there is less sunlight.
Cloudy day, because there is less sunlight.
Sunny day, because photosynthesis stops.
Cloudy day, because photosynthesis increases.
What is the process used by plants to make their own food?
Respiration
Pollination
Photosynthesis
Transpiration
What is the main product of photosynthesis?
Glucose
Water
Carbon dioxide
Oxygen
During photosynthesis, radiant (or light) energy is converted into what kind of energy?
Xylem helps plants deliver water and nutrients to the entire plant. What human body system is this like?
Explain why photosynthesis is much slower in underwater plants.
Match the following vocabulary words to their definition.
chemical reaction that converts solar energy into chemical energy
photosynthesis
oxygen
product of photosynthesis
carbon dioxide
reactant for photosynthesis
glucose
product of photosynthesis
light energy
source of energy for photosynthesis
Match the following
Carries the glucose to the plant for its life processes.
Phloem
Tube like structure that distributes water to the plant.
Xylem
Holes on the underside of the leaf that lets gases in and out of the leaf.
Stomata
The factory where photosynthesis hapens.
Green Leaf
Pigment which absorbs the sun's energy.
Chlorophyll
Glucose is a type of?
Sugar
The arrow in a chemical equation means?
sum
yields or rxn
difference
together
What organelle does photosynthesis occur in?
chlorophyll
chloroplast
mitochondria
nucleus
What does the symbol CO2 represent?
Carbon Dioxide
Glucose
Oxygen
Water
What does the symbol H2O represent?
Carbon Dioxide
Glucose
Oxygen
Water
What does the symbol C6H12O6 represent?
Carbon Dioxide
Glucose
Oxygen
Water
What does the symbol O2 represent?
Carbon Dioxide
Glucose
Oxygen
Water
A consumer is also known as a _______________.
Autotroph
Heterotroph
Producer
Raw Material
Producers are also known as autotrophs.
True
False
The ultimate source of energy for all living things is the sun.
True
False
The green pigment that absorbs light energy is chlorophyll.
True
False
Most of the oxygen in Earth's atmosphere is the results of
cellular respiration
burning of fossil fuels
eruption of volcanoes
photosynthesis
Identify one ell structure, other than the cell wall, that is found in plant cells but not found in animal cells
Nucleus
Chloroplast
Vacuole
mitochondria
In which part of a leaf does photosynthesis take place?
cell wall
cell membrane
nucleus
chrloroplast
Organisms are classified as producers if they are able to
remove oxygen from the air
make their own food
remove microbes from the soil
make carbon dioxide
An example of an autotroph is
algae
human
cat
worm
What is the primary structure in the potato plant that converts light energy into chemical energy?
leaves
flower
roots
tuber
