Q15 / 180 · AIIMS 2007 · Botany

Leghaemoglobin helps in

  • A
    imparting colour to floral petals
  • Correct answer
    B
    protecting nitrogenase from \(\mathrm{O}_2\)
  • C
    destroying bacteria
  • D
    transport of food in plants.

Solution

Leghaemoglobin is a pinkish pigment present inside the root nodules of nitrogen fixing plants like legumes. It is an oxygen scavenger and is related to blood pigment haemoglobin. It protects nitrogen fixing enzyme nitrogenase from oxygen. The most important bacteria present inside the nodules is Rhizobium.

Hence, the correct answer is option: 'B'.

Relevant Questions