I. | Use of improved crop varieties |
II. | Use of better management practices |
III. | Use of agrochemicals [fertilisers and pesticides] |
1. | Only I | 2. | Only I and III |
3. | Only I and II | 4. | I, II and III |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | More tolerance to abiotic stresses |
2. | Alternative resources to industries |
3. | Increased efficiency of mineral usage by plants |
4. | Fixation of atmospheric nitrogen |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGM crops have been modified with various traits. Golden rice has been developed by the International Rice Research Institute for:
1. | Improved shelf life | 2. | Disease resistance |
3. | Herbicide resistance | 4. | Improved nutritional value |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA protoxin is:
1. | A primitive toxin | 2. | A denatured toxin |
3. | Toxin produced by protozoa | 4. | Inactive toxin |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe trigger for activation of toxin of Bacillus thuringiensis is:
1. | Acidic pH of stomach |
2. | High temperature |
3. | Alkaline pH of gut |
4. | Mechanical action in the insect gut |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBacillus thuringiensis (Bt) strains have been used to design novel:
1. | Biofertilizers | 2. | Biometallurgic techniques |
3. | Biomineralization processes | 4. | Bioinsecticidal plants |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhy does the bacterium Bacillus thuringiensis not affected by the toxins produced by it that can kill arthropods?
1. | The toxin inactivated by proteins in the bacterial cells. |
2. | The bacterial cell does not have organelles and thus it is harmless. |
3. | It is produced as a pro-toxin by the bacterium. |
4. | The protein needs post-transcriptional modification possible only in eukaryotic cells. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCorn borer can be controlled by the proteins encoded by Bacillus thuringiensis gene:
1. | cryIAb | 2. | cryIAc |
3. | cryIIAb | 4. | cryIIIAc |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | a nematode, Meloidogyne incognita. |
2. | a nematode, Caenorhabditis elegans. |
3. | a trematode, Clonorchis sinensis. |
4. | a cestode, Taenia sloium. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRNAi, as a mechanism of cellular defense, takes place in:
1. | All bacteria | 2. | All unicellular organisms |
3. | All plants only | 4. | All eukaryotic organisms |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology