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all of the following statements concerni...

all of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia

A

Can induce root nodules on many plant species

B

Can fix nitrogen in the free-living state

C

Like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex

D

Forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanolds

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The correct Answer is:
B
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AAKASH INSTITUTE-BIOLOGICAL CLASSIFICATION-Assignment (Section - C) (Previous Years Questions)
  1. Barophillic prokaryotes

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  2. Auxospores and hormocysts are formed respectively by

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  3. all of the following statements concerning the actinomycetous filament...

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  4. Which unicellular organism has a macronucleus for trophic function and...

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  5. For retting of jute, the fermenting microbe used is

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  6. In the five kingdom system of classification which single kingdom out ...

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  7. In five kingdom system the main basis of classification is

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  8. In which kingdom would you include archaea and nitrogen fixing organis...

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  9. Maximum nutritional diversity is found in the group

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  10. Specialised cells for fixing atmospheric nitrogen in Nostoc are

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  11. Nuclear membrane is absent in

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  12. The most abundant prokaryotes helpful to humans in making curd from mi...

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  13. Organisms called Methanogens are most abundant in a

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  14. Which of the following is mainly produced by the activity of anaerobic...

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  15. A peculiar odour found in marshy areas and cow sheds is of gas produce...

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  16. Organisms, which fix atmospheric nitrogen in the soil, fall under the ...

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  17. Transduction in bacteria is mediated by

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  18. Many blue-green algae occur in thermal springs (hot water springs). Th...

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  19. For the first time, the bacteria were observed by

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  20. A number of organic compounds can be decomposed by

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