Morphology of Flowering Plants Question 4

4. Roots of which plant contains an oxidising agent?

[2001]

(a) Carrot

(d) Mustard

(b) Soyabean

(d) Radish

Show Answer

Answer : b

Hints & Solutions

(b) In the roots of soyabean plant, leghaemoglobin, a pigment with affinity for oxygen, is found. Symbiotic hemoglobin (leghemoglobin) is a hemeprotein found in micromolar concentrations in infected cells of legume roots. This is an essential component for nitrogen fixation by legumes. Leghemoglobin is produced as a result of symbiotic association between bacteroid and plant.