The plants cannot accumulate `NH_(4)^(+)` ion because--

Options

A. It is oxidising agent
B. it is reducing agent
C. it is oxidatively aminated
D. it is toxic to plants

Answer

**Step-by-Step Solution:**

1. **Understanding Ammonium Ion (NH₄⁺):**
The ammonium ion is a form of nitrogen that plants can absorb from the soil. However, it is important to note that while plants can utilize it, they do not store it.

2. **Toxicity of Ammonium Ion:**
The primary reason plants cannot accumulate ammonium ions is due to their toxicity. High concentrations of ammonium can be harmful to plant cells, leading to cellular damage and impaired growth.

3. **Utilization of Ammonium Ion:**
Instead of accumulating ammonium ions, plants quickly convert them into amino acids. This conversion is crucial as amino acids are the building blocks of proteins, which are essential for various physiological functions in plants.

4. **Formation of Proteins:**
Once the ammonium ions are converted into amino acids, these amino acids are then used to synthesize proteins. Proteins play vital roles in plant structure, function, and metabolism.

5. **Conclusion:**
Due to the toxic nature of ammonium ions, plants do not store them. Instead, they utilize them immediately for the synthesis of amino acids and proteins, which are necessary for their growth and development.

**Final Answer:**
Plants cannot accumulate NH₄⁺ ions because they are toxic to the plant.

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