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Multiple Choice
In the context of organic chemistry, how do plants primarily obtain carbon for growth?
A
From the breakdown of water molecules
B
By converting nitrogen gas into carbon compounds
C
By consuming organic matter in the soil
D
Through the absorption of carbon dioxide from the atmosphere
Verified step by step guidance
1
Understand that plants are autotrophs, meaning they produce their own food through the process of photosynthesis.
Recognize that photosynthesis is the process by which plants convert light energy into chemical energy, using carbon dioxide and water as raw materials.
Identify that carbon dioxide (CO2) from the atmosphere is absorbed by plants through small openings in their leaves called stomata.
Acknowledge that during photosynthesis, carbon dioxide is fixed into organic compounds, primarily glucose, through a series of reactions known as the Calvin cycle.
Conclude that the primary source of carbon for plant growth is the carbon dioxide absorbed from the atmosphere, which is then used to build various organic molecules necessary for the plant's structure and energy needs.