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Biofertilisers...

Biofertilisers

A

Increase dependence on chemical fertilisers

B

Are organisms that enrich the nutrient quality of soil

C

Include potash, phosphatic and nitrogenous organic and chemical compounds

D

Are used regularly in the fields to deplete soil nutrients

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Which of the following statement/s is/are wrong? I. Drug can be used for generation of biogas, commonly called gobar gas. II. Biofertilisers are organisms that enrich the nutrient quality of the soil. III. Cyanobacteria are heterotrophic microbes widely distributed in aquatic and terrestrial environments. IV. Many members of the genus Glomus form mycorrhiza. V. Biogas produced by microbes is used as a source of energy in urban areas.

Make correction wherever you find mistake in spellings/words in the following paragraph/sentences. A. Biofertilisers are a high-cost output but they do not pollute the environment. Acceptability of biofertillisers is also low because they usually produce quick and spectacular results. B. Fungi of mycorrhiza solubilise phosphorus, produce plant growth inhibiting substance and protect host plants from soil nutrients. (C) Biopesticides are those chemical agents that are used for control of weeds. insects and pathogons.

Fill in the blanks: A. Chemical _______ and ___________ are the sources of widespread pollution. B. Spores of Bacillus ___________ Bacillus _________ Produce insecticidal_______Protein. C. Biofertilisers promote plant growth and protect plants from soil _______ D. Mycorrhizae help in solubilisation of ________ which is present in soil in the insoluble forms E. Rhizobia form root ______ in ________ crops and some_______ form symbiotic association with the fern Azolla. F. Different varieties of cheese are known by their characteristic___________ G. Single cell protein (SCP) provides a valuable _____ rich supplement in _______ diet. H. The sewage water is treated till the BOD is found to be_____ I. The bacteria responsible for production of biogas are collectively called _______ J. ______ grwo in milk and convert it to curd.

Biofertiliser for Soya Bean crop is

Define "(i) Vermicompost"" ""(ii) Green manure" "(iii) Biofertiliser"" " "

Consider the following four statemets (A - D) related to organic farming and select the correct option stating which ones are true (T) and which ones are false (F). The statements: (A) Produces food crops rich in lipids, vitamins and iron (B) Users biofertilisers which increases soil fertility (C ) There is more use of chemical fertilisers and pesticides (D) Raising unpolluted crops throuth the use of bacteria, fungi and cyanobacteria

Which of the followig statements is/are incorrect ? (i) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial habitats. (ii) Anabaena, Nostoc and Oscillatoria are photosynthetic N_(2) -fixing cyanobacteria. (iii) Tolypothrix (BGA) can increase rice production by about 20% (iv) BGA add organic matter to the soil and increase its fertility. (v) In our country, biofertilisers are not available commercially in the markets for farmers.

Which of the following acts as biofertiliser

Which one is a biofertiliser ?

AAKASH INSTITUTE-MICROBES IN HUMAN WELFARE-Assignment (SECTION - A)
  1. are used in detergent formulations and are helpful in removing oily st...

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  2. Select the microbe which is the source of 'clot buster' enzyme.

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  3. An immunosuppressive agent used in organtransplant patients is

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  4. The product of Monascus purpureus has been commercialised as

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  5. are produced by yeast and act by competitively inhibiting the enzyme r...

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  6. Treatment of waste-water is done by the

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  7. In a sewage treatment plant, primary treatment is

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  8. During primary treatment, all solids that settle forms A and the super...

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  9. What are 'flocs', formed during secondary treatment of sewage?

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  10. Identify the stage of sewage treatment shown below.

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  11. What happens to activated sludge?

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  12. What is the composition of the biogas?

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  13. Identify the parts labelled A, B & C w.r.t., biogas plant

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  14. The bacterium responsible for biogas production are collectively calle...

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  15. The technology of biogas production was developed in india mainly use ...

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  16. The ladybird beetle and dragonflies are useful to get rid of and res...

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  17. The effective biocontrol agents of serveral plant pathogens are specie...

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  18. Biofertilisers

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  19. The main sources of biofertilisers are (a) Bacteria (b) Cyanobact...

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  20. In paddy fields, serves as an important biofertiliser.

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