2006-08-13 18:56:59 · 6 answers · asked by hanns 1 in Science & Mathematics ➔ Biology
It contain nitrofying bacteria which supply nitrogen to the plants.
2006-08-14 15:35:07 · answer #1 · answered by moosa 5 · 0⤊ 1⤋
Root nodules occur on the roots of plants that associate with symbiotic bacteria.
Under nitrogen limiting conditions, plants from the pea family Fabaceae form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.
The bacteria enter the developing nodule through a structure called an infection thread, which grows through the root hair into the basal part of the epidermis cell, and onwards into the root cortex; they are then surrounded by a plant-derived membrane and differentiate into bacteroids that fix nitrogen.
2006-08-13 19:39:18 · answer #2 · answered by ♫ ♫ 4 · 0⤊ 0⤋
The bacteria present in the root nodule act as primary symbiotic fixer of nitrogen for the host plant in nitrogen deficiency soil.
2014-12-18 18:26:36 · answer #3 · answered by Jurimoni 1 · 0⤊ 0⤋
some plants which grow in the nitrogen deficient environment possess root nodules. They possess nitrogen fixing bacteria which help them recovering from nitrogen deficiency.This is called a symbiotic relationship in which both species are benefited.
2006-08-13 19:56:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
they are for the baby roots to feed silly!
2006-08-13 18:59:00 · answer #5 · answered by ? 6 · 0⤊ 1⤋
it gives off carbon dioxcide
2006-08-13 18:59:43 · answer #6 · answered by oxarielxo 1 · 0⤊ 1⤋