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WorksheetsPhotosynthesis
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
In what way does plant nutrition differ from human nutrition?
a)
Plants make their own nutrients; humans must consume theirs.
b)
Plant nutrition consists mainly of protein; human nutrition consists mainly of carbohydrates.
c)
Plants absorb their nutrients from the soil; humans get theirs from food.
d)
Plants cannot make their own food.
2.
Which of the following do plants gain from sunlight?
a)
Carbon Dioxide
b)
Energy
c)
Sugar
d)
Water
3.
What might happen if plants could not produce glucose?
a)
They would not be green.
b)
They could not grow and function.
c)
They could not absorb energy from the sun.
d)
They would not have leaves.
4.
Identify this specialized plant cell.
a)
Palisade cell
b)
Blood cell
c)
Leaf cell
d)
Plant cell
5.
The leaves of plants contain a green pigment which absorbs light for photosynthesis. What is this pigment?
a)
Xylem
b)
Leaf
c)
Chlorophyll
d)
Stomata
6.
Which part of the body is most similar to stomata in plants?
a)
The Heart
b)
The Brain
c)
The Lungs and Airways
d)
The fingers and toes
7.
Which two substances do most plants absorb through their root hair cell?
a)
soil and water
b)
water and minerals
c)
minerals and carbon dioxide
d)
light and oxygen
8.
On this photosynthesis practical, bubbles of gas are produced. What is this gas?
a)
Carbon dioxide
b)
Hydrogen
c)
Chlorine
d)
Oxygen
9.
Chlorophyll traps energy from sunlight and stores it as what kind of energy?
a)
Kinetic Energy
b)
Heat Energy
c)
Colour Energy
d)
Chemical Energy
10.
Which two substances do plants need for photosynthesis to occur?
a)
Carbon dioxide and water
b)
Water and Light
c)
Light and carbon dioxide
d)
Oxygen and glucose (sugar)
11.
What will happen to the photosynthesis rate if you increase the intensity of light?
a)
Photosynthesis rate will increase.
b)
Photosynthesis rate will decrease.
c)
Photosynthesis rate will remain the same.
d)
Photosynthesis will stop.
12.
Glucose (sugar) is also produced during photosynthesis. What do plants use glucose for?
a)
Source of energy.
b)
Supports plant growth and development.
c)
Keeps plants warm.
d)
Prevents plants from dying.
13.
How does temperature affects photosynthesis rate?
a)
As temperature increases, photosynthesis rate also increases.
b)
As temperature decreases, photosynthesis rate also decreases.
c)
Plants cannot photosynthesis if the temperature is too cold or too hot.
d)
All of the statements are true.
14.
If the amount of carbon dioxide in the air is decreased, what will happen to photosynthesis rate?
a)
Photosynthesis rate will also decrease.
b)
Photosynthesis rate will increase.
c)
Photosynthesis rate will remain the same.
d)
Photosynthesis will stop.
15.
How is the leaf adapted to do photosynthesis?
a)
The leaf's upper layer is thin and transparent to allow light to pass through.
b)
The leaf's palisade layer has the most chloroplast to absorb the maximum amount of light possible.
c)
The leaf's lower layer has many stomata to allow gases to diffuse.
d)
All of the descriptions above are true.
16.
Studies show that plants in shady places have larger leaves. Which of the following explains this finding?
a)
Plants have larger leaves to have a larger surface area to get carbon dioxide.
b)
Plants have larger leaves to have a larger surface area to prevent water from evaporating.
c)
Plants have larger leaves to have a larger surface area to trap sunlight.
d)
Plants have larger leaves to have a larger surface area because they grow faster.
17.
This diagram is a leaf cell. Which of the following refers to letter D?
a)
Nucleus
b)
Vacuole
c)
Chloroplast
d)
Cell wall
18.
The diagram below is a respiratory system. Which of the following refers to number 7?
a)
Trachea
b)
Bronchioles
c)
Lungs
d)
Oesophagus
19.
The diagram below is a respiratory system. Which of the following refers to number 8?
a)
Lungs
b)
alveoli
c)
bronchioles
d)
capillaries
20.
Which three gases do we breathe out?
a)
Oxygen, carbon dioxide, nitrogen
b)
Carbon dioxide, argon and nitrogen
c)
Carbon dioxide, oxygen and hydrogen
d)
We only breathe out carbon dioxide.
21.
Human airways (nose and lungs) are lined with ciliated cells. What is the function of this cell in the airway?
a)
To remove bacteria and viruses.
b)
To keep the nose and lungs protected.
c)
To prevent pollutants from entering the lungs.
d)
To keep the person happy.
22.
What effect does cigarette smoke has on ciliated cells on the nose and lungs?
a)
Cigarette smoke weakens them.
b)
Cigarette smoke reduces the number of cilia.
c)
Cigarette smoke allows pollution to get into the lungs.
d)
Cigarette smoke does not affect them at all.
23.
Cigarette smoking is addictive. Which of the following substances is found in cigarette smoke is addictive?
a)
Carbon dioxide
b)
Tobacco
c)
Nicotine
d)
Cocaine
24.
When people exercise, they need more blood per minute supplied to their body. Which of the following DOES NOT explain why muscles need more blood during exercise?
a)
The muscles will need more oxygen.
b)
The muscle needs for energy to exercise.
c)
The body needs to expel more carbon dioxide.
d)
The body needs to do respiration faster.
25.
Which of the following BEST explains why is it important that the blood supply to the brain is constant?
a)
The needs oxygen and glucose to function.
b)
The brain controls all parts of the body.
c)
The brain is constantly at work.
d)
The brain works harder than the other parts of the body.
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