WorksheetsPhotosynthesis
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is the colour change of iodine for a positive result for starch?
a)
blue-black to brown
b)
colourless to blue-black
c)
green to blue-black
d)
brown to blue-black
2.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
3.
Which organisms perform Photosynthesis?
a)
Only plants
b)
Only animals
c)
plants and animals
4.
What is the pigment (green coloured substance) in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
Chloroform
d)
Chlorine
5.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
6.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
7.
The plant stores the glucose in its leaf as......
a)
starch
b)
sugar
c)
protein
d)
fats
8.
What is photosynthesis?
a)
The process in which humans eat their food
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
9.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
10.
What is E pointing to?
a)
waxy cuticle
b)
stomata
c)
upper epidermis
d)
cuticle
11.
Stomata are
a)
tiny holes in the leaves of a plant that allow gases to enter or leave the plant
b)
living things
c)
the cells which form the opening in leaves
d)
the waxy layer to protect leaves from sun and wind
12.
Which organism (living thing) in this picture must absorb carbon dioxide to survive?
a)
bird
b)
rabbit
c)
insect
d)
tree
13.
Chemical formula for Carbon Dioxide
a)
CO2
b)
H2O
c)
O2
d)
C6H12O6
14.
This is a microscopic image of the underside of a leaf. What are the structures labeled "A"?
a)
chloroplasts
b)
stomata
c)
xylem
d)
root cells
15.
Aqil had two set-ups, Y and Z. He used similar potted plants and glass jars. The amount of water in both pots was the same at the start of the experiment.
Aqil was trying to find out if __________ is needed for photosynthesis.
Aqil was trying to find out if __________ is needed for photosynthesis.
a)
light
b)
water
c)
carbon dioxide
16.
Which of these is NOT A TRUE statement about why photosynthesis is important:
a)
It captures and makes the sun's energy available to all species
b)
It turns CO2 into Oxygen for us to breath
c)
It helps plants create energy to send to rest of food chain
d)
It makes the water for our planet
17.
What is the name of the plant that has leaves with parts not containing chlorophyll?
a)
Non-variegated
b)
Wilted
c)
Variegated
d)
De-starched
18.
What is wrong in step 2 of this experiment?
(Ethanol - alcohol)
(Ethanol - alcohol)
a)
there is too much ethanol
b)
the Bunsen burner is still lit
c)
the leaf should be in iodine, not ethanol
d)
the leaf is not soft enough
19.
The leaf is washed in step 3. What is the OTHER purpose of step 3?
a)
to remove the chlorophyll
b)
to soften the leaf
c)
to cook the leaf
d)
to wash out any starch that might be in the leaf
20.
What would be a suitable conclusion for this experiment?
a)
to see if plants need light to make starch
b)
black paper makes a leaf turn white
c)
no starch is made if light cannot reach the leaf
d)
only the parts kept in the dark can mane starch
100 %
