Write the importance of $Zn^{2+}$ and $Cu^{2+}$ in plants.
- AActivates enzymes like carboxylases and is involved in auxin synthesis.
- BEssential for overall metabolism and redox reactions in photosynthesis.
- CBoth are required for chlorophyll synthesis and electron transport.
- DBoth are involved in nitrogen fixation and water splitting.
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Column $I$ Column $II$ $(A)$ Chlorine $(i)$ Important for $ATP$ and carbohydrate synthesis $(B)$ Calcium $(ii)$ Synthesis of hemoglobin and chlorophyll $(C)$ Magnesium $(iii)$ Essential for nucleic acid synthesis $(D)$ Zinc $(iv)$ Required for muscle contraction $(E)$ Copper $(v)$ Plays an important role in $CO_2$ transport $(vi)$ Required for the splitting of water
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| $(A)$ Chlorine | $(i)$ Important for $ATP$ and carbohydrate synthesis |
| $(B)$ Calcium | $(ii)$ Synthesis of hemoglobin and chlorophyll |
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| $(vi)$ Required for the splitting of water |
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