Multiple Choice
Which of the following correctly describes the gases used and released during photosynthesis and cellular respiration in plants?
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9. Photosynthesis
Introduction to Photosynthesis
Multiple Choice
Which of the following are the main reactants required for photosynthesis in plants?
A
Oxygen and glucose
B
Glucose and carbon dioxide
C
Nitrogen and water
D
Carbon dioxide and water
Verified step by step guidance1
Understand the process of photosynthesis: Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose. This process occurs in the chloroplasts and requires specific reactants.
Identify the main reactants: Photosynthesis requires carbon dioxide (CO₂) from the atmosphere and water (H₂O) absorbed by the plant roots. These are the primary reactants.
Recall the chemical equation for photosynthesis: The general formula is: . This equation shows that carbon dioxide and water are converted into glucose and oxygen using light energy.
Eliminate incorrect options: Oxygen and glucose are products of photosynthesis, not reactants. Nitrogen is not involved in the photosynthesis process. Therefore, the correct reactants are carbon dioxide and water.
Conclude: The main reactants required for photosynthesis in plants are carbon dioxide (CO₂) and water (H₂O). These reactants are essential for the light-dependent and light-independent reactions in the chloroplasts.
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