Scelta multipla
What gas enters plant cells through the stomata?
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40. Circulatory System
Gas Exchange
Scelta multipla
Which gas primarily enters the leaf during the process of photosynthesis?
A
Nitrogen
B
Methane
C
Oxygen
D
Carbon dioxide
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Understand the process of photosynthesis: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. This process primarily occurs in the chloroplasts of plant cells.
Identify the role of gases in photosynthesis: During photosynthesis, plants take in carbon dioxide (CO₂) from the atmosphere and release oxygen (O₂) as a byproduct.
Recognize the importance of carbon dioxide: Carbon dioxide is the key gas that enters the leaf through small openings called stomata. It is used in the Calvin cycle to produce glucose.
Differentiate between the gases: While nitrogen and methane are present in the atmosphere, they do not play a direct role in photosynthesis. Oxygen is released during photosynthesis, not absorbed.
Conclude the primary gas involved: Carbon dioxide is the essential gas that enters the leaf during photosynthesis, enabling the plant to synthesize glucose and release oxygen.
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