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Mineral Requirements of a Plant-Data Intensity 2 Multiple Questions and Answers.
| 6. | Nitrogen is not taken up by plants in _______ form.? | ||
| A. | N2 | ||
| B. | NO3� | ||
| C. | NO2� | ||
| D. | NH4+ | ||
| 7. | Hydroponics was demonstrated by? | ||
| A. | Julius Von Sachs | ||
| B. | Hoagland | ||
| C. | Arnon | ||
| D. | M. Calvin | ||
| 9. | Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as? | ||
| A. | critical concentration | ||
| B. | toxic concentration | ||
| C. | beneficial concentration | ||
| D. | optimum concentration | ||
| 10. | Which of the following statements if wrong about manganese toxicity? | ||
| A. | Appearance of brown spots surrounded by chlorotic veins | ||
| B. | Deficiency of Iron | ||
| C. | Deficiency of Calcium | ||
| D. | Excess of Magnesium | ||
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