Question

how are root nodules formed?and explain all steps of formation of root nodules and rhizobium bacteria and nitrozen fixation

Answer 1

Answer:

1) Rhizobium bacteria divides to form colonies which surround the root hairs and epidermal cells of the plant.

2) The root hair gets curled and get invaded by the bacteria.

3) After the invasion, it forms an infection thread that carries the bacteria into the cortex of the root.

Hope it help

Answer 2

Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.