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7. | Name the mineral element which is required by a plant in a great amount? | |
A. | Calcium | |
B. | Cobalt | |
C. | Phosphorus | |
D. | Nitrogen | |
Answer: Option D | |
Explanation: | |
Nitrogen is required by plants in a great amount as its constituent amino acids, nucleic acid, amides, proteins, nucleotides, and coenzymes. |
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