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Q. No.Given below are two statements:
Statement I:
Aphids and mosquitoes are natural pests.
Statement II:
Lady bird and dragonflies are natural pests controllers.
In light of the above statements , choose the most appropriate answer from the options given below:
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct
Subtopic: Microbes in Biocontrol Agent |
90%
Level 1: 80%+
NEET - 2024
Hints
Match List I with List II
Choose the correct answer from the options given below:
1. A-II, B-IV, C-III, D-I
2. A-III, B-I, C-IV, D-II
3. A-IV, B-I, C-III, D-II
4. A-III, B-I, C-II, D-IV
| List I | List II | ||
| A. | Clostridium butylicum | I. | Ethanol |
| B. | Saccharomyces cerevisiae | II. | Streptokinase |
| C. | Trichoderma Polysporum | III. | Butyric acid |
| D. | Streptococcus sp. | IV. | Cyclosporin-A |
Choose the correct answer from the options given below:
1. A-II, B-IV, C-III, D-I
2. A-III, B-I, C-IV, D-II
3. A-IV, B-I, C-III, D-II
4. A-III, B-I, C-II, D-IV
Subtopic: Chemicals, Enzymes & Other Bioactive Molecules |
86%
Level 1: 80%+
NEET - 2024
Hints
The biological processes performed by cyanobacteria in paddy fields include:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | biological fixation of CO2. |
| II: | biological fixation of atmospheric dinitrogen. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Microbes as Biofertilizer |
Level 4: Below 35%
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A mycorrhiza is a symbiotic association between a green plant and a fungus where:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The plant makes organic molecules by photosynthesis and supplies them to the fungus in the form of sugars or lipids. |
| II: | The fungus supplies the plant with water and mineral nutrients, such as phosphorus, taken from the soil. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Microbes as Biofertilizer |
82%
Level 1: 80%+
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Name the genus of arbuscular mycorrhizal (AM) fungi, all species of which form symbiotic
relationships (mycorrhizae) with plant roots:
1. Cercospora
2. Glomus
3. Tetraploa
4. Rozella
relationships (mycorrhizae) with plant roots:
1. Cercospora
2. Glomus
3. Tetraploa
4. Rozella
Subtopic: Microbes as Biofertilizer |
96%
Level 1: 80%+
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Bacteria that fix gaseous nitrogen in the atmosphere into a more usable form, such as ammonia,
while free-living in soil, include:
1. Only I and II
2. Only III and IV
3. Only I and III
4. Only III
while free-living in soil, include:
| I: | Azospirillum |
| II: | Azotobacter |
| III: | Rhizobia |
| IV: | Frankia |
2. Only III and IV
3. Only I and III
4. Only III
Subtopic: Microbes as Biofertilizer |
85%
Level 1: 80%+
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Identify the incorrect statement:
| 1. | The use of the chemical fertilisers has contributed significantly to this pollution. |
| 2. | Biofertilisers are organisms that enrich the nutrient quality of the soil. |
| 3. | The main sources of biofertilisers are bacteria, fungi and cyanobacteria. |
| 4. | Chemical fertilizers are integral and essential component of organic farming. |
Subtopic: Microbes as Biofertilizer |
90%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | The use of pathogens like baculoviruses as biocontrol agent in ecologically sensitive areas should be avoided. |
| Reason (R): | Baculoviruses are broad spectrum general insecticides. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True; (R) is False |
| 3. | (A) is False; (R) is False |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Microbes in Biocontrol Agent |
68%
Level 2: 60%+
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All the following will be true for Trichoderma spp. except:
| 1. | It is being developed as a biological control agent. |
| 2. | It is a fungicide. |
| 3. | It lives in symbiosis with roots of vascular plants. |
| 4. | It is very common in the root ecosystems. |
Subtopic: Microbes in Biocontrol Agent |
Level 3: 35%-60%
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Bacillus thuringiensis has been used as:
1. Diazotroph
2. Bioinsecticide
3. Biofertilizer
4. Thrombolytic
1. Diazotroph
2. Bioinsecticide
3. Biofertilizer
4. Thrombolytic
Subtopic: Microbes in Biocontrol Agent |
86%
Level 1: 80%+
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