Question

Match the following.

(A) Nitrobacter	(i) Free living aerobic nitrogen fixing organism
(B) Clostridium	(ii) Converts nitrite to nitrates
(C) Nitrosococcus	(iii) Converts ammonia to nitrite
(D) Azotobacter	(iv) Free living anaerobic nitrogen fixing organism

(a) A-(iii), B-(iv), C-(ii), D- (i)
(b) A-(i), B-(ii), C-(iii), D- (iv)
(c) A-(ii), B-(iv), C-(iii), D- (i)
(d) A-(iv), B-(ii), C-(i), D- (iii)

Answer 1

Hint: The nitrogen cycle portrays the change of nitrogen between various synthetic structures. Most of the world's air (about $78\%$) is made out of barometrical nitrogen, yet it isn't in a structure that is usable for living things.

Complete answer:
Nitrobacter assumes a significant job in the nitrogen cycle. They oxidize nitrite to nitrate in the dirt. Nitrobacter utilizes energy from the oxidation of nitrite particles (${ NO }_{ 2 ^- }$ ), into nitrate particles (${ NO }_{ 3 ^- }$ ), to satisfy their energy needs. Clostridium is an anaerobe that can't endure oxygen regardless of whether they are not fixing nitrogen. They live in natural surroundings low in oxygen, for example, soils and rotting vegetable issues. The last advance during the time spent high-impact alkali oxidation is done by gatherings of nitrifying microorganisms, for example, Nitrosococcus which convert smelling salts to nitrite. Azotobacter is oxygen consuming, free-living soil microorganism which ties environmental nitrogen, which is difficult to reach to plants and delivers it as ammonium particles into the dirt.
Obsession: In request for creatures to utilize climatic nitrogen (${ N }_{ 2 }$), it should be "fixed" or changed over into smelling salts (${ NH }_{ 3 }$). This can happen every so often through a lightning strike, yet the heft of nitrogen obsession is finished by free living or advantageous microorganisms. These microbes have the nitrogenase catalyst that joins vaporous nitrogen with hydrogen to deliver smelling salts. It is then additionally changed over by the microorganisms to make their own natural mixes. Some nitrogen fixing microbes live in the root knobs of vegetables where they produce alkali in return for sugars. Today, about $30\%$ of the absolute fixed nitrogen is fabricated in compound plants for fertilizer. Nitrification: Nitrification is the change of alkali (${ NH }_{ 3 }$) to nitrate (${ NO }_{ 3^{ -} }$). It is generally performed by soil living microscopic organisms, for example, nitrobacter. This is significant in light of the fact that plants can acclimatize nitrate into their tissues, and they depend on microbes to change it from smelling salts over to a usable structure. Nitrification is performed for the most part by the variety of microscopic organisms, Nitrobacter.

So the correct answer is ‘A-(ii), B-(iv), C-(iii), D- (i)’.

Note:
Complex species collaborations permit creatures to change nitrogen over to usable structures and trade it between themselves. Nitrogen is fundamental for the arrangement of amino acids and nucleotides. It is fundamental for all living things.