1
Question
The macronutrient_________ is a component of all organic compounds but is not obtained from soil.
- Carbon
- Hydrogen
- Oxygen
- Nitrogen
- Carbon
- Hydrogen
- Oxygen
- Nitrogen
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Solution
The correct option is A Carbon
Plants absorb carbon dioxide from the air, combine it with water and light and make carbohydrates. The process is known as photosynthesis.Carbon forms the backbone of most plant biomolecules, including proteins, starches and cellulose. Although all green plants make their food by photosynthesis, they also need to get nutrients from the soil. These nutrients dissolve in water and are taken up by the roots of the plant. The most important plant nutrients are nitrogen (N), phosphorous (P), and potassium (K). Thus, the correct answer is 'Carbon.'
Plants absorb carbon dioxide from the air, combine it with water and light and make carbohydrates. The process is known as photosynthesis.Carbon forms the backbone of most plant biomolecules, including proteins, starches and cellulose. Although all green plants make their food by photosynthesis, they also need to get nutrients from the soil. These nutrients dissolve in water and are taken up by the roots of the plant. The most important plant nutrients are nitrogen (N), phosphorous (P), and potassium (K).
Thus, the correct answer is 'Carbon.'
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