The preparation and flowering of leaves of tea and tobacco is due to the activities of 

(1) Bacillus subtilis

(2) Bacillus megatherium

(3) Streptococcus lactis

(4) Acetobacter aceti

The antibiotics have no effect on viruses because

a.   viruses show the metabolism of their own

b.   viruses are too small in size for antibiotics to act upon them

c.   viruses show no metabolism of their own

d.    viruses produce a thick covering and encyst themselves as endospores

The domestic sewage in large cities

(1) has a high BOD as it contains both aerobic and bacteria

(2) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment plants (STPs)

(3) when treated in STPs does not really require the aeration step as the sewage contains adequate oxygen

(4) has very high amounts of suspended solids and dissolved salts

Which one of the following useful organisms is not a part in production of curd/yoghurt?

(1) S. thermophilus

(2) Lactobacillus bulgaricus

(3) Acetobactor aceti

(4) Streptococcus lactis

Which one is used/regarded as a biofertilizer?

1. An association between pteridophytes and cyanobacteria Anabaena

2. An association between gymnosperms and Nostoc

3. An association between legume and Rhizobium

4. All of the above

Rice wine is 

(1) beer

(2) wine

(3) cider

(4) sake

Name the blank spaces A, B, C and D given in the following table:

(1) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Fungus), D - Penicillin

(2) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Algae), D - Penicillin

(3) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Prokaryote), D - Penicillin

(4) A - Lactobacillus, B - Trichoderma polysporum, C - Agaricus (Fungus), D - Penicillin

Name the blank spaces a, b, c and d given in the following table:

(1) A - Streptococcus, B - Fungus, C - Cyclosporin-A, D - Clostridium butylicum

(2) A - Clostridium butylicum, B - Streptococcus, C - Fungus, D - Cyclosporin-A

(3) A - Cyclosporin-A, B - Clostridium butylicum, C - Streptococcus, D - Fungus

(4) A - Fungus, B - Cyclosporin-A, C - Clostridium butylicum, D - Streptococcus

Which of the following bacteria help in nitrogen fixation from atmosphere?

A. Azotobacter

B. Rhizobium

C. Azospirillum

D. Lactobacillus

(1) A, C, D

(2) A, B, C, D

(3) B, C, D

(4) A, B, C

Yeasts have been used for the commercial production of all except:

(1) Wine

(2) Whisky

(3) Ethanol

(4) Curd