7
Question
The correct sequence of events related to nodule formation of legumes is
A. Formation of bacteroids
B. Growth of infection thread
C. Secretion of sugars, amino acids and flavonoids by roots
D. Chemotactic movement of Rhizobia towards legume roots
The correct sequence of events related to nodule formation of legumes is
A. Formation of bacteroids
B. Growth of infection thread
C. Secretion of sugars, amino acids and flavonoids by roots
D. Chemotactic movement of Rhizobia towards legume roots
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Solution
The correct option is B CDBA
Root hairs of legume secretes chemicals like sugars, amino acids and flavonoids. Rhizobia get attracted towards root hair and infects and proven infection thread. Rhizobia transform into active bacteroids in the nodule inner cortical cells and pericycle cells form nodule.
CDBA
Root hairs of legume secretes chemicals like sugars, amino acids and flavonoids. Rhizobia get attracted towards root hair and infects and proven infection thread. Rhizobia transform into active bacteroids in the nodule inner cortical cells and pericycle cells form nodule.
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