In which of the following forms is iron absorbed by plants

Options

A. Both ferric and ferrous
B. Free element
C. Ferrous
D. Ferric

Answer

**Step-by-Step Solution:**

1. **Understanding Iron in Plants**: Iron is an essential micronutrient for plants, playing a crucial role in various physiological processes, including photosynthesis and respiration.

2. **Forms of Iron**: Iron exists in different oxidation states, primarily as ferrous (Fe²⁺) and ferric (Fe³⁺) ions.

3. **Solubility of Iron Forms**: The ferrous form (Fe²⁺) is relatively soluble in water, which allows it to be absorbed by plant roots. However, it can be easily oxidized to the ferric form (Fe³⁺), which is less soluble.

4. **Absorption Process**: Plants absorb iron from the soil, primarily in the ferrous form due to its higher solubility. However, once absorbed, it can be oxidized to the ferric form in the plant's vascular system.

5. **Transport in Plants**: After absorption, iron is transported through the plant via the xylem, where it may exist in both ferrous and ferric forms depending on the conditions.

6. **Conclusion**: The question asks for the form in which iron is absorbed by plants. Although both ferrous and ferric forms are involved, the primary form that is absorbed is the ferrous form due to its solubility.

7. **Final Answer**: The correct answer to the question "In which of the following forms is iron absorbed by plants?" is **ferrous form (Fe²⁺)**.

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