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प्रश्न
Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.
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उत्तर
Sonalika and Kalyansona were the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.
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संबंधित प्रश्न
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| Sr. No. | Column I | Column II | |
| (i) | Eutrophication | (a) | A soil erosion |
| (ii) | Biomagnification | (b) | carbon monoxide, methane |
| (iii) | Particulate pollutant | (c) | Prevention of extinction |
| (iv) | Conservation | (d) | Dust, smog |
| (v) | Gaseous pollutants | (e) | Accumulation of nonbiodegradable substances |
| (vi) | Deforestation | (f) | Death of aquatic ecosystem |
