Microbes in Human Welfare · Question 11

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

1. Effluents of primary treatment
2. Primary sludge
3. Floating debris
4. Activated sludge

Match the following columns and select the correct option.

1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Select the correct group of biocontrol agents.

1. Oscillatoria, Rhizobium, Trichoderma
2. Nostoc, Azospirillum, Nucleopolyhedrovirus
3. Bacillus thuringiensis, Tobacco mosaic virus, Aphids
4. Trichoderma, Baculovirus, Bacillus thuringiensis

Match the following organisms with the products they produce : Select the correct option.

1. (a)-(iii), (b)-(iv), (c)-(v), (d)-(i)
2. (a)-(ii), (b)-(i), (c)-(iii), (d)-(v)
3. (a)-(ii), (b)-(iv), (c)-(v), (d)-(iii)
4. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(v)

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

1. Anabaena
2. Lactobacillus
3. Trichoderma
4. Chlorella

Which of the following is a commercial blood cholesterol lowering agent?

1. Streptokinase
2. Lipases
3. Cyclosporin A
4. Statin

Conversion of milk to curd improves its nutritional value by increasing the amount of

1. vitamin D
2. vitamin A
3. vitamin B12
4. vitamin E

Select the mismatch :

1. Rhodospirillum - Mycorrhiza
2. Anabaena - Nitrogen fixer
3. Rhizobium - Alfalfa
4. Frankia - Alnus

Which of the following in sewage treatment removes suspended solids ?

1. Secondary treatment
2. Tertiary treatment
3. Primary treatment
4. Sludge treatment

Which of the following is correctly matched for the product produced by them ?

1. Acetobacter aceti : Antibiotics
2. Penicillium notatum : Acetic acid
3. Methanobacterium : Lactic acid
4. Saccharomyces cerevisiae : Ethanol