InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Explain the process of nodule formation!!!!???? |
|
Answer» The roots of leguminous plant come in contact with rhizobium it becomes curled or deform by chemical secretion by bacteria the rhizobium enter into deform root hairs and proliferate with in the roots hair the plant responds by forming an infection thread that grows inward to deliver the bacteria to the tissue the nodules established contact with the vascular tissue of the host for thr absorption of nutrients the formation of roots nodules and nitrogen fixation occur unfer the control of genes of leguminous and the gene of bacteria Your wellcome Alia ji Thanks aayushi ji ??? Nodule formation : (a) It includes the reactions between Rhizobium and roots of host plant. Rhizobia multiply, (b) They colonise the surrounding of the roots. They get attached to root epidermal hair cells,©\tA root hair curls and the bacterium invades into it. An infection thread is formed carrying it into root jcortex: (d) The bacteria are then released from the thread into cells and it causes the differentiation of N2 fixing cells. Nodule formation occurs. In general terms, nodules are formed as a result of infection of the roots by soil bacteria. ... The complex process by which plant roots are infected by rhizobia is known as infection. The complex process in which nodules are formed is known as nodulation. |
|