ICSE Class 8 Answered

explain the symbiotic relationship between rhizobium and pea plants

Asked by nathsantanukumar | 27 Apr, 2018, 09:46: PM

Expert Answer

Rhizobium carry out nitrogen fixation. In order for plants to get nitrogen it must first be incorporated into organic compounds such as amino acids in a process known as nitrogen fixation. The Rhizobia absorb nitrogen and use it to make proteins and as a by-product it produces nitrogen-containing ammonium which, unlike the N2 in the air, the plant can take up and use for growth (protein production).

The relationship between legumes and Rhizobium is a form of symbiotic relationship, where both organisms benefit from each other - the plant gets nitrogen from the ammonium and the bacteria receive organic acids from the plant to use as food source.

Answered by Sivanand Patnaik | 29 Apr, 2018, 11:15: AM