Excess of copper in toxic proportions in plants/animals can be

Options

A. EDTA
B. Ethane-1,2- diamine
C. Oxalate ion
D. D-penicillamine

Explanation

**Step-by-Step Solution:**

1. **Understanding the Problem:**
- The question asks about the effects of excess copper in toxic proportions in plants and animals. Copper is an essential trace element, but in high amounts, it can be toxic.

2. **Identifying the Condition:**
- In humans, an excess of copper can lead to a condition known as Wilson's disease, which is a genetic disorder that prevents the body from properly eliminating copper.

3. **Treatment for Excess Copper:**
- The primary treatment for Wilson's disease and excess copper in the body is the use of chelating agents. One such chelating agent is D-Penicillamine.

4. **Mechanism of Action:**
- D-Penicillamine works by binding to excess copper in the body. This binding forms a complex that can be excreted from the body.

5. **Excretion Process:**
- Once the copper is bound to D-Penicillamine, the complex is eliminated from the body through urine, effectively reducing the copper levels in the body.

6. **Conclusion:**
- Therefore, the answer to the question is that excess copper in toxic proportions in plants and animals can be removed using D-Penicillamine, which facilitates the excretion of copper through urine.

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