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Question
Which of the following is a eukaryotic biofertilizer?
Which of the following is a eukaryotic biofertilizer?
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Solution
The correct option is D Glomus
Biofertilizers are organisms that enrich the nutrient quality of the soil and promote plant growth.
The main sources of biofertilizers are bacteria, fungi and cyanobacteria (BGA).
Certain fungi are closely associated with the roots of higher plants. This symbiotic association of fungi with the roots of higher plants is called mycorrhiza. Many members of the genus Glomus (fungi) form mycorrhiza. The fungi absorb phosphorus from soil and passes it to the plant. Thus, it reduces the dependency on chemical fertilisers.
Rhizobium is a symbiotic nitrogen fixing bacterium. It is found in association with the root nodules of plants belonging to the legume family.
Azotobacter is a free-living nitrogen fixing bacteria. They live freely in the soil and perform nitrogen fixation.
Anabaena is a blue green alga (cyanobacteria) that is capable of fixing atmospheric nitrogen.
Fungi are eukaryotes as their cells are characterised by a well-defined nucleus and membrane bound cell organelles.
Bacteria are prokaryotes as they lack a well-defined nucleus and membrane bound cell organelles.
Hence, option d is the correct answer.
Biofertilizers are organisms that enrich the nutrient quality of the soil and promote plant growth.
The main sources of biofertilizers are bacteria, fungi and cyanobacteria (BGA).
Certain fungi are closely associated with the roots of higher plants. This symbiotic association of fungi with the roots of higher plants is called mycorrhiza. Many members of the genus Glomus (fungi) form mycorrhiza. The fungi absorb phosphorus from soil and passes it to the plant. Thus, it reduces the dependency on chemical fertilisers.
Rhizobium is a symbiotic nitrogen fixing bacterium. It is found in association with the root nodules of plants belonging to the legume family.
Azotobacter is a free-living nitrogen fixing bacteria. They live freely in the soil and perform nitrogen fixation.
Anabaena is a blue green alga (cyanobacteria) that is capable of fixing atmospheric nitrogen.
Fungi are eukaryotes as their cells are characterised by a well-defined nucleus and membrane bound cell organelles.
Bacteria are prokaryotes as they lack a well-defined nucleus and membrane bound cell organelles.
Hence, option d is the correct answer.
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