Multiple choice

The pigment essential for N2 fixation by leguminous plants is

  1. phycocyanin

  2. anthocyanin

  3. leghemoglobin

  4. phycoerythrin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Leghemoglobin is an oxygen-binding protein found in the root nodules of leguminous plants. It maintains low oxygen levels to protect the oxygen-sensitive nitrogenase enzyme.

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