Question

Plants take zinc in form of:

• A. \(ZnSO_4\)
• B. \(Zn^{++}\)
• C. \(ZnO\)
• D. \(Zn\)

Answer 1

The Correct Option is B

To understand how plants absorb zinc, we need to look at the forms of zinc available in the soil and how plants typically uptake essential micronutrients.

Concept: Zinc (Zn) is an essential micronutrient for plants, playing a critical role in various physiological functions, including enzyme activation and the synthesis of proteins and growth hormones.

Uptake Form: Plants usually absorb nutrients from the soil in ionic form because they dissolve readily in water, become part of the soil solution, and are easier for the plant roots to take up.

Among the given options:

• \(ZnSO_4\): This is zinc sulfate, a compound that can be used as a fertilizer to supply zinc. However, it dissolves in water to release zinc ions.
• \(Zn^{++}\): This represents zinc ions, the form in which plants absorb zinc from the soil.
• \(ZnO\): Zinc oxide is an insoluble compound that does not directly provide zinc to plants in a form they can absorb.
• \(Zn\): This is elemental zinc, which is not directly available to plants in this form.

Conclusion: The correct answer is that plants take zinc in the form of zinc ions \(Zn^{++}\). These ions are soluble in water and can be readily absorbed by plant root systems from the soil solution.