12th Standard CBSE Syllabus & Materials
12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Important Questions And Answers Study Material - QB365 Set B
NEW12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Important Questions And Answers Study Material - QB365 Set A
NEW12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Assertion and Reason Study Material - QB365 Set D
NEW12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Assertion and Reason Study Material - QB365 Set C
NEW12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Assertion and Reason Study Material - QB365 Set B
NEW12th Standard CBSE
CBSE 12th Biology Sexual Reproduction in Flowering Plants Assertion and Reason Study Material - QB365 Set A
Published on: 25/05/2021
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Questions + Answers key
Take MCQ Biology Test1.
In fermentation of dough which is the main gas produced?
Carbon dioxide
Hydrogen
Both (a) and (b)
Methane
2.
Mycorrhiza does not help the host plant in:
Enhancing its phosphorus uptake capacity
Increasing its tolerance to drought
Enhancing its resistance to root pathogens
Increasing its resistance to insects
3.
Methanogens do not produce
oxygen
methane
hydrogen sulfide
carbon dioxide
4.
Activated sludge should have the ability to settle quickly so that it can
be rapidly pumped back from sedimentation to aeration tank
absorb pathogenic bacteria present in waste water while sinking to the bottom of the settling tank
be discarded and anaerobically digested
absorb colloidal organic matter
5.
Which one is the most important role of microorganism of the well being of humans?
sewage treatment
production of methane
production of SO2
conversion of milk to curd
6.
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria
vitamin C
vitamin D
vitamin B12
vitamin E.
7.
Which one of the following alcoholic drinks is produced without distillation?
Wine
Whisky
Rum
vitamin E.
1.
(a)
Carbon dioxide
2.
(d)
Increasing its resistance to insects
3.
(a)
oxygen
4.
(a)
be rapidly pumped back from sedimentation to aeration tank
5.
(a)
sewage treatment
6.
(c)
vitamin B12
7.
(a)
Wine
12th Standard CBSE Syllabus & Materials
12th Standard CBSE
CBSE 12th Standard Biology Sexual Reproduction in Flowering Plants Sample Question Papers Study Material - QB365 Set 1
NEW12th Standard CBSE
CBSE 12th Chemistry d- and f- Block Elements Important Questions And Answers Study Material - QB365 Set B
NEW12th Standard CBSE
CBSE 12th Chemistry d- and f- Block Elements Important Questions And Answers Study Material - QB365 Set A
NEW12th Standard CBSE
CBSE 12th Chemistry Chemical Kinetics Important Questions And Answers Study Material - QB365 Set B
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