Biofertilizers And Antibiotics Test
Biofertilizers And Antibiotics
This is online test 02 for CBSE class 12 Biology Microbes in Human Welfare (Biofertilizers and antibiotics).. There are 10 questions in this test with each question having around four answer choices.
Questions & Answers
1
Rotenone is
- AA natural insecticideCorrect
- BAn insect hormone
- CA bio herbicide
- DA natural herbicide
2
Symbiotic association of fungi with plant are called as
- ALichens
- BMycovectro
- CMycobacteria
- DMycorrhizaCorrect
3
Agriculture by using only biofertilizers is called
- AOrganic farmingCorrect
- BInorganic farming
- CComposting
- DManuring
4
Which one of the following is not used in organic farming?
- AGlomus
- BOscillatoria
- CEarthworm
- DSnailCorrect
5
One of the free-living anaerobic nitrogen-fixer is
- AAzotobacter
- BRhizobium
- CBeijerinckia
- DRhodospirillumCorrect
6
Organism like Escherichia coli and Chlamydia trachomatis fall into which domain?
- ABacteriaCorrect
- BArchaea
- CAnimalia
- DEukarya
7
Which one of the following is used as biological insecticide?
- ASilkmoth
- BTiger beetleCorrect
- CCaterpillar
- DMazra Poka
8
The discovery that led to development of first antibiotic was made by
- APauling
- BPasteur
- CFlemmingCorrect
- DJenner
9
Which one of the following plant is commonly used as green manure?
- ACrotalaria junceaCorrect
- BCassia fistula
- CDalbergia sissoo
- DAcacia nilotica
10
The biological control of agricultural pests, unlike chemical control is
- AToxic
- BVery expensive
- CSelf-perpetuatingCorrect
- DPolluting