WorksheetsPhotosynthesis
Total questions: 40
Worksheet time: 47mins
Name
Class
Date
1.
What is the source of energy for photosynthesis?
a)
carbohydrates-chemical
b)
sunlight-radiant
c)
heat-thermal
d)
television-electrical
2.
What are the reactants (what's needed) for photosynthesis?
a)
glucose and oxygen
b)
light, water, and carbon dioxide
3.
What are the products (what's made) during photosynthesis?
a)
glucose and oxygen
b)
water, light, and carbon dioxide
4.
What is the purpose of photosynthesis?
a)
make glucose
b)
make ATP
c)
make light
d)
release carbon dioxide
5.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
6.
What type of organism uses photosynthesis?
a)
plants
b)
bacteria
c)
animals
d)
both plants and some bacteria
7.
What is the energy conversion during photosynthesis?
a)
chemical --> chemical
b)
thermal --> electrical
c)
chemical --> electrical
d)
radiant --> chemical
8.
In which organelle (part of the cell) does photosynthesis take place?
a)
mitochondria
b)
chloroplast
c)
nucleus
d)
cell membrane
9.
What is the gas we breath out that plants use for photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
10.
How can photosynthesis be related to cellular respiration?
a)
What's produced (made) by one is needed (the reactants) for the other
b)
They both produce the same products
c)
They both have the same reactants (need the same things)
d)
These 2 processes have nothing in common
11.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
12.
The reactants of photosynthesis are
a)
sugar and water.
b)
sugar and oxygen.
c)
carbon dioxide and water.
d)
carbon dioxide and oxygen.
13.
What are the products of photosynthesis?
a)
Carbon dioxide and water
b)
Carbon dioxide and oxygen
c)
Glucose and oxygen
d)
Glucose and water
14.
What pigment absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
15.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + 6H2O --> 6O2 + C6H12O6
b)
6CO2 + C6H12O6 + 6H2O --> O2
c)
6O2 + 6H2O --> 6CO2 + C6H12O6
d)
C6H12O6 + 6O2 ---> 6H2O + 6CO2
16.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
17.
Which of the following best describes photosynthesis?
a)
Photosynthesis converts radiant energy into chemical energy.
b)
Photosynthesis produces carbohydrates.
c)
Plants need sunlight, carbon dioxide, water, nutrients, and chlorophyll to complete photosynthesis.
d)
Plants use chlorophyll, water, and carbon dioxide to make sugar.
18.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
19.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + glucose
b)
CO2 + glucose + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + glucose
d)
CO2 + O2 + H2O --> Light+ glucose
20.
Why is photosynthesis important?
a)
creates oxygen for animals to breath
b)
creates energy for heterotrophs to use
c)
creates food for plants to use
d)
all of these are correct
21.
Which plant structure is extremely necessary for photosynthesis to take place?
a)
leaves
b)
flower petals
c)
anthers
d)
pistils
22.
What is another name for glucose?
a)
Chlorophyll
b)
Chloroplasts
c)
Stomata
d)
Sugar
23.
Where does carbon dioxide enter the plants? (Hint: the pores on the under side of the plant)
a)
The leaves
b)
Stomata
c)
Roots
d)
Stem
24.
Why do plants go through photosynthesis?
a)
To make food for us
b)
To make food for themselves
c)
They're bored and have nothing else to do
25.
What kind of plants go through photosynthesis?
a)
All plants
b)
Plants with purple leaves
c)
Plants with green leaves
d)
Plants with red leaves
26.
What would happen to us if plants stopped producing oxygen?
a)
We would eventually die since there would be no oxygen
b)
We would keep living since we breathe carbon dioxide
c)
Nothing
27.
What does photo mean?
a)
Print
b)
Picture
c)
Make
d)
Light or Color
28.
What does synthesis mean?
a)
Photo
b)
Make (put together)
c)
Light
d)
Color
29.
Where does a plant absorb the water that it uses during photosynthesis?
a)
Leaves
b)
Stem
c)
Roots
d)
Petals
30.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
does not absorb green light.
d)
does not absorb violet light.
31.
Where do the light-dependent reactions occur?
a)
thylakoid membrane
b)
stroma
c)
mesophyll
d)
mitochondria
32.
Where does the light-independent reactions (Calvin cycle) occur?
a)
thylakoid
b)
stroma
c)
lumen
d)
mitochondria
33.
Which of the following go through the process of photosynthesis?
a)
bees
b)
algae
c)
humans
d)
mushrooms
34.
A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C (80oF). The gas being collected is probably ________.
a)
oxygen
b)
carbon dioxide
c)
ATP
d)
glucose
35.
Green plants reflect ________ light.
a)
Red
b)
Green
c)
All
d)
Red and Violet
36.
__________ is a stack of thylakoids
a)
Granum
b)
Stomata
c)
Stroma
d)
Chloroplast
37.
Where does the carbon come from that is used to form glucose?
a)
The soil
b)
CO2 in the air
c)
From other carbohydrates
d)
Calvin Cycle
38.
Autotroph or heterotroph?
a)
Autotroph
b)
Heterotroph
39.
Autotroph or heterotroph?
a)
Autotroph
b)
Heterotroph
40.
What is the primary function of the light-dependent reactions of photosynthesis?
a)
To produce glucose
b)
To produce NADPH and ATP
c)
To use ATP
d)
To produce oxygen
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