Question

WHICH SUBSTANCE IS PRESENT IN ROOT NODULES OF LEGUMINOUS PLANTS?

Answer 1

Dear student

The significance of swelling in leguminous plants:

In root nodules (swelling region) of leguminous plants, a nitrogen-fixing bacteria is present. This bacteria is called Rhizobium. Roots of a legume plant secrete chemical attractants. Bacteria collect over the root hairs and form infection thread. The infected root cell forms a pigment called leghemoglobin. The leghemoglobin protects the nitrogen-fixing enzyme from oxygen.

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