Q. No.| Column-I | Column-II | ||
| I. | Methanogens | A. | Microbial biocontrol agent |
| II. | Organic wastes | B. | Penicillin |
| III. | Bacillus thuringiensis | C. | Biochemical oxygen demand |
| IV. | Penicillium notatum | D. | Methanobacterium |
Which of the combinations is correct?
| I | II | III | IV | |
| 1. | B | A | D | C |
| 2. | C | D | A | B |
| 3. | D | C | A | B |
| 4. | D | B | A | C |
Biological control agent is obtained from:-
1. Bacillus thruingiensis
2. Monascus purpureus
3. Streptococcus
4. Aspergillus niger
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer:
|
Column A |
Column B |
|
(i) Lady bird |
(A) Methanobacterium |
|
(ii) Mycorrhiza |
(B) Trichoderma |
|
(iii) Biological control |
(C) Aphids |
|
(iv) Biogas |
(D) Glomus |
The correct answer is:
1. i B, ii D, iii C, iv A
2. i C, ii D, iii B, iv A
3. i D, ii A, iii B, iv C
4. i C, ii D, iii A, iv A
1. bioremediation of contaminated soils
2. reclamation of wastelands
3. gene transfer in higher plants
4. biological control of soil-borne plant pathogens
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
The free-living fungus Trichoderma can be used for:
1. killing insects
2. biological control of plant diseases
3. controlling butterfly caterpillars
4. producing antibiotics
For a biocontrol agent to be part of an integrated pest management, it should be:
| 1. | species-specific and symbiotic |
| 2. | free living and broad spectrum |
| 3. | narrow spectrum and symbiotic |
| 4. | species-specific and inactive on non-target organisms |
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) |
Identify the incorrectly matched pair
|
1. |
Baculoviruses |
Species specific, broad spectrum insecticides |
|
2. |
Trichoderma |
Free living fungi common in root ecosystems |
|
3. |
Ladybird |
Biocontrol of aphids |
|
4. |
Organic farming |
Pests kept at manageable levels rather than completely eradicated |
Pathogens of Arthropods effectively used as biological control agents include
1. Trichoderma
2. Baculoviruses
3. Agrobacterium tumefaciens
4. E. Col
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