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MODEL PAPER 9 — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMODEL PAPER 91 Mark
MCQ
Crop rotation is used by farmers to increase:
  • A
    Soil fertility
  • B
    Nitrogenous content of soil
  • C
    Breeding
  • D
    Organic content of soil
✓

Answer

Soil fertility
Explanation : Crop rotation is the method of agriculture in which leguminous plants are grown between two cereal crops. The root nodule of this bacterium fix the atmospheric nitrogen and increase the fertility of the soil.

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