Roots of which plant contain a red pigment which has affinity for oxygen : -

Roots of which plant contain a red pigment which has affinity for oxygen : -
A Carrot
B Soyabean
C Mustard
D Radish

Detailed Solution

Root nodules of leguminous plants such as soybean contain a pink-red pigment called leghaemoglobin.
It has a high affinity for oxygen and binds free oxygen, protecting the oxygen-sensitive enzyme nitrogenase, while still supplying oxygen for respiration of the bacteroids.
So the roots of soybean contain this red pigment.

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