5
Answer: CSet 4: Command of Evidence
Explanation
PASSAGE
Photosynthesis occurs in plant cells called chloroplasts. During this process, plants absorb carbon dioxide and water, use sunlight to convert them into glucose (sugar), and release oxygen as a byproduct. This is the foundation of most food chains on Earth.
According to the text, what is the role of sunlight in photosynthesis?
A. It is absorbed by the plant's roots.
B. It provides the energy to convert CO2 and water into glucose.
C. It is released as a byproduct.✓ Correct
D. It replaces oxygen in the atmosphere.
Detailed Explanation
The text states plants 'use sunlight to convert them [CO2 and water] into glucose. ' Sunlight provides the energy.
Key Evidence:
• "use sunlight to convert them into glucose"
Why others are wrong: A (Sunlight is absorbed by leaves/chloroplasts, not roots.), C (Oxygen is the byproduct, not sunlight.), D (Photosynthesis releases oxygen, doesn't replace it.).