61.  Which symbiotic bacteria is \(N_{2}\) fixative with the root nodule of leguminious plant ?

A. Azospyrillium

B. Clostridium

C. Azotobactor

D. Rhizobium

Answer : Option D

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62.  Which living organism works as bio-fertiliser ?

A. Azzola

B. Clostridium

C. Azotobactor

D. Rhizobium

Answer : Option A

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63.  Which micro organism is useful in production of citric acid ?

A. Azotobactor

B. Penicillium

C. Asperzilus niger

D. Clostridium

Answer : Option C

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64.  By which process cheese and toddy is obtained ?

A. Fermantation

B. Distillation

C. Pasuirisation

D. Hydrolisis

Answer : Option A

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65.  To which BOD is related ?

A. Microbes and organic matters

B. Organic compound

C. Microbes

D. None of them

Answer : Option B

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66.  Which organism is useful to produce Riboflavin ?

A. Arabia hossipae

B. Saccharhomyces Cervisiae

C. (a) & (b) both

D. None of them

Answer : Option A

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67.  Bacillus thuringiensis is useful in....

A. Bio fertiliser

B. Biometalogical

C. Biotoxic plant

D. Bio product plant

Answer : Option C

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68.  Bio fertilizer means......

A. Crop which shows rapid growth

B. Cow dung and agricultural west

C. prepared by Anabaena and Nostoc

D. None of them

Answer : Option C

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69.  

Which pair is correct ? (Kerala PMT 2007)
1 - Cynobacteria - Bio pestisides
2 - Mychorriza - Absorption of phosphurus
3 - Becillus thuringiensis - toxin
4 - Single cell protien - Rhizobium

A. 2

B. 3

C. 1

D. 4

Answer : Option B

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70.  Which pair is odd ?

A. Yeast - Ethenol

B. Penicillium - Penicillin

C. Methenogens - Biogas

D. Streptococus - Stetins

Answer : Option D

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