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Q.29. Which of the following statements about Rhizobium legume nodule formation is not true?
(a) Rhizobium can only fix nitrogen after it becomes a bacteroid within a root cortex cell.
(b) Rhizobium induces invagination of root hairs.
(c) Within an infection thread, Rhizobium is still extracellular to the plant.
(d) The infection thread can fuse with any root cell of an appropriate legume species.

Dear Student,

Statement 1 is not true about the Rhizobium legume nodule formation.

As Rhizobium bacteria can grow as free- living organism but can also live as nitrogen fixing symbiotic organisms.

Hope this will help you and clear your doubt.

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