The first link in any food chain is a green plant because:
Correct answer: C. They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight
- A. They are widely distributed
- B. They are firmly fixed to soil
- C. They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight
- D. There are more herbivorous animals than the carnivorous
Explanation
Green plants are the first link because photosynthesis fixes atmospheric carbon dioxide into organic food using sunlight. Animals cannot make food from carbon dioxide in this way and must obtain energy through feeding.
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