Nodules with nitrogen-fixing bacteria are present in

Arrange the stages of root nodule formation in the correct sequence:
$I-$ Infection thread is produced.
$II-$ Bacteria are carried to the cortex of the root.
$III-$ Bacteria attach to the root hair.
$IV-$ Bacteria are released from the thread into the cells.
$V-$ Differentiation into nitrogen-fixing cells occurs.

Which plant tissue of the root is responsible for the formation of root nodules in plants of the family $Fabaceae$?

Root nodules contain

Which of the following is responsible for nitrogen fixation in an aquatic fern?

Which microorganisms live symbiotically on leguminous plants?