Mineral Nutrition · Biology · AIIMS
MCQ (Single Correct Answer)
1
Azolla is used as a biofertiliser because it
AIIMS 2018
2
Assertion Nitrogen-fixing bacteria of legume root nodules survive in oxygen depleted cells.
Reason Leghaemoglobin completely removes oxygen from nodule cells.
AIIMS 2018
3
Assertion Magnesium is important in photosynthesis and carbohydrate metabolism.
Reason $$\mathrm{Mg}^{2+}$$ is involved in the synthesis of nucleic acids.
AIIMS 2018