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Fertilizers and Pesticides

Name a free l...

Question

Name a free living and a symbiotic bacterium that serve as biofertilizer. Why are they so called?

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Solution

The free-living bacterium and symbiotic bacteria are the Azotobacter and Rhizobium. They are helpful in increasing the nutrient quantity. Hence they are called bio-fertilizers.

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Q. Name a free-living and a symbiotic bacterium that serve as bio-fertiliser. Why are they so called? [2]

Q. Why is Rhizobium categorized as a 'symbiotic bacterium'? How does it act as a biofertilizer?

Q. Name any one symbiotic microorganism which serves as a biofertilizer and mention its specific role.

Which of the following is used as biofertilizer?
I. Cyanobacteria
II. Yeast
III. Symbiotic bacteria
IV. Free living bacteria

Q. Define the term biofertilizers. How does each of the following serve as a biofertilizer?

(a) Ectomycorrhizae (b) Rhizobium (C) Azospirillum

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