Microbes In Biocontrol Agent
High-Yield Trend
Questions 9 MCQs
A genetically engineered micro-organism used successfully in the bioremediation of oil spills is a species of:
1. Pseudomonas
2. Trichoderma
3. Xanthomonas
4. Bacillus
1. bioremediation of contaminated soils
2. reclamation of wastelands
3. gene transfer in higher plants
4. biological control of soil-borne plant pathogens
1. Pisolithus tinctorius
2. Pseudomonas cepacin
3. Gliocladium virens
4. Paecilomyces lilacinus
Which of the following is not used as a biopesticide?
1. Bacillus thuringiensis
2. Trichoderma harzianum
3. Nucleopolyhedrovirus(NPV)
4. Xanthomonas campestris
A common biocontrol agent for the control of plant diseases is:
1. Baculovirus
2. Bacillus thuringiensis
3. Glomus
4. Trichoderma
Which one of the following is an example of carrying out biological control of pests/diseases using microbes?
1. Trichoderma sp. against certain plant pathogens
2. Nucleopolyhedrovirus against white rust in Brassica
3. Bt-cotton to increase cotton yield
4. Ladybird beetle against aphids in mustard
Which of the following can be used as biocontrol agent in the treatment of plant disease?
1. Lactobacillus
2. Trichoderma
3. Chlorella
4. Anabaena
Select the correct group of biocontrol agents:
1. Nostoc, Azospirillum, Nucleopolyhedrovirus
2. Bacillus thuringiensis. Tobacco mosaic virus, Aphids
3. Trichoderma, Baculovirus, Bacillus thuringiensis
4. Oscilatoria, Rhizobium, Trichoderma
Match the following columns and select the correct option:-
| Column-I | Column-II | ||
| (a) | Dragonflies | (i) | Biocontrol agents of several plant pathogens |
| (b) | Bacillus thuringiensis | (ii) | Get rid of mosquitoes |
| (c) | Glomus | (iii) | Narrow spectrum insecticidal applications |
| (d) | Baculoviruses | (iv) | Biocontrol agents of lepidopteran plant pests |
| (v) | Absorb phosphorus from soil |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (v) | (iv) | (i) |
| 2. | (ii) | (i) | (iii) | (iv) |
| 3. | (ii) | (iii) | (iv) | (v) |
| 4. | (ii) | (iv) | (v) | (iii) |