Which of the following serves as source of carbon in plants:
Correct answer: B. Atmospheric CO2
- A. CO2 of carbonic rocks
- B. Atmospheric CO2
- C. Fossil fuel
- D. All of the above
Explanation
Plants obtain their carbon mainly by taking atmospheric CO₂ into leaves during photosynthesis and converting it into organic compounds. Fossil fuel is a stored carbon pool, not a normal direct carbon source for living plants.
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Practise Forest Ecology
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