
Photosynthesis Quiz
Authored by Rini Kusrini
Science
8th Grade
Used 9+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What is the primary function of photosynthesis?
To absorb sunlight
To absorb carbon dioxide
To release oxygen
To synthesize food for plants
Answer explanation
The primary function of photosynthesis is to synthesize food for plants, using sunlight, carbon dioxide, and water. While it absorbs sunlight and carbon dioxide and releases oxygen, the main goal is food production.
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which pigment is essential for photosynthesis in plants?
Chlorophyll
Carotene
Xanthophyll
Melanin
Answer explanation
Chlorophyll is the primary pigment in plants that captures light energy for photosynthesis, enabling the conversion of sunlight into chemical energy. Other pigments like carotene and xanthophyll assist but are not essential.
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What gas do plants absorb during photosynthesis?
Hydrogen
Nitrogen
Carbon dioxide
Oxygen
Answer explanation
During photosynthesis, plants absorb carbon dioxide from the atmosphere. This gas is essential for the process, as it is converted into glucose and oxygen, which are vital for plant growth and energy.
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Where does water enter the plant for photosynthesis?
Through the roots
Through the stems
Through the flowers
Through the leaves
Answer explanation
Water enters the plant primarily through the roots, where it is absorbed from the soil. This water is essential for photosynthesis, as it provides the necessary hydrogen for glucose production.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
During photosynthesis, sunlight is used to split which molecules?
Glucose
Carbon dioxide
Water
Oxygen
Answer explanation
During photosynthesis, sunlight is used to split water molecules into oxygen and hydrogen. This process is essential for producing energy in plants, making water the correct answer.
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What are the small pores in leaves called that allow gas exchange?
Vessels
Stomata
Chloroplasts
Roots
Answer explanation
The small pores in leaves that allow gas exchange are called stomata. They enable the uptake of carbon dioxide and the release of oxygen, which are essential for photosynthesis.
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
How does photosynthesis help balance atmospheric gases?
By producing glucose
By absorbing oxygen
By releasing carbon dioxide
By absorbing carbon dioxide and releasing oxygen
Answer explanation
Photosynthesis helps balance atmospheric gases by absorbing carbon dioxide and releasing oxygen. This process reduces CO2 levels while increasing O2, which is essential for the survival of aerobic organisms.
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