32. Microbes In Human Welfare

Question 1

Microbes used to control pest under IPM include
a)dragonfly
b)ladybird
c)trichoderma
d)cactoblastis

Answer 1

Trichoderma

Question 2

During secondary treatment in secondary treatment plants,BOD increases initially and then decreases

Answer 2

True

Question 3

VAM

Answer 3

Vesicular arbuscular mycorrizhae

Question 4

Mycorrhizal roots : Sensitive(easily damaged) to root borne pathogens

Answer 4

This statement is WRONG. It is RESISTENCE to root brone pathogens

Question 5

Cyclosporine A

Answer 5

It has immunosuppressive but no antifungal property

Question 6

The dough for making idli and dosa is fermented by

Answer 6

Natural bacteria

Question 7

Malted cereals

Answer 7

Beer

Question 8

Penicillium chrysogenum / penicillium notatum

Answer 8

Penicillin

Question 9

Statement 1 : secondary treatment is a physicochemical process
Statement 2: flocculation in sewage treatment is physical process where as digestion is chemical process

Answer 9

Statement 1 wrong (secondary treatment is a BIOLOGICAL[microbes are reducing BOD] process )
Statement 2 correct (flocculation is physical as there is physical association of masses of bacteria with fungal filament)

Question 10

Assertion: antibiotic action is biological antagonism
Reason : antibiotics are produced by some microbes and it’s action kills pathogenic mictobes

Answer 10

Both assertion and reason are true and reason is the correct explanation of assertion

Question 11

Assertion: natural vinegar is the sour wine
Reason : vinegar is the oxidation product of ethanol in wine by the brewers yeast saccharomyces

Answer 11

Assertion is true but reason is false ( sugar ___ethanol (by yeast)____acetic acid(this is a comp of vinegar)

Question 12

C6H12O6 ——–>2C2H5OH + 2CO2 is the chemical reaction in
1) break making
2) wine making
3) both bread and wine making
4) Distillation

Answer 12

Both bread and wine making