Question

name the following :- 1) microorganism that increases soil fertility by fixing atmospheric nitrogen. 2) microorganism that coagulates milk. 3) a plant which shows root nodules formation.
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Answer 1

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1) Rhizobium

Rhizobium is an example of a symbiotic bacterium that attaches to the roots of leguminous plants and it increases the soil fertility by converting atmospheric nitrogen into organic compounds.

2) Lactococcus lactis

Lactococcus lactis is a microbe classified informally as a Lactic Acid Bacterium because it ferments milk sugar (lactose) to lactic acid

3) Parasponia

Root nodules that occur on non-legume genera like Parasponia in association with Rhizobium bacteria, and those that arise from symbiotic interactions with Actinobacteria Frankia in some plant genera such as Alnus, vary significantly from those formed in the legume rhizobia

Answer 2

Answer:

1 Blue green algae

2Milk is slightly acidic. When the pH is lowered even more by the addition of another acidic ingredient, the protein molecules stop repelling each other. This allows them to stick together or coagulate into the clumps known as curds.by lactobacillus bacteria.3Root nodules that occur on non-legume genera like Parasponia in association with Rhizobium bacteria, and those that arise from symbiotic interactions with Actinobacteria Frankia in some plant genera such as Alnus, vary significantly from those formed in the legume-rhizobia symbio.legumenous plants