Question

similarity between Rhizobium in leguminous plants and lichen​

Answer 1

Answer:

Both shows symbiotic relationship. As Legume plants shows with Rhizobium bacterium and Lichen (the relationship between algae and fungi). they both are heterotrophs and and perform symbiotic relationship.

Answer 2

Answer:

Explanation:

Rhizobia are bacteria that fix nitrogen (diazotrophs) after becoming established inside root nodules of legumes (Fabaceae). To express genes for nitrogen fixation, rhizobia require a plant host; they cannot independently fix nitrogen.

Lichens are extremely unique organisms, they are actually the composite of a fungus and an organism capable of photosynthesis: algae or cyanobacteria. The fungus and its photosynthetic symbiont (shortened to “photobiont”) are mutually symbiotic; the photobiont produces energy in the form of carbohydrates which is absorbed by the fungus.

In both cases we can observe a "symbiosis", a close association between two organisms in which organisms gain mutual benefit.

Both in the nodules of the legumes and in the lichens we observe the symbiosis between an organism incapable of photosynthesis (bacteria in the case of leguminous nodules and fungi in the case of lichens) with a photosynthetic organism.