MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Resistance to the yellow mosaic virus in bhindi (Abelmoschus esculentus) resulted in a new variety called _________ |
| A. | Pusa Sadabahar |
| B. | Parbhani Kranti |
| C. | Himgiri |
| D. | Pusa Shubhra |
| Answer» C. Himgiri | |
| 2. |
In mung bean, resistance to chilly mosaic virus and powdery mildew were induced by mutations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which of the following is used to induce mutations in plants? |
| A. | Radiations |
| B. | Water |
| C. | Virus |
| D. | Leaves |
| Answer» B. Water | |
| 4. |
What is a mutation? |
| A. | Change in DNA |
| B. | Change in the entire genetic makeup of the organism |
| C. | Change in RNA |
| D. | Change in base sequence within genes |
| Answer» E. | |
| 5. |
Availability of a limited number of disease resistance genes constrains conventional breeding practices. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following crops is resistant to the chilly mosaic virus? |
| A. | Cowpea |
| B. | Cauliflower |
| C. | Chilli |
| D. | Brassica |
| Answer» D. Brassica | |
| 7. |
Which of the following is a variety of wheat crop? |
| A. | Pusa Swarnim |
| B. | Pusa Shubhra |
| C. | Himgiri |
| D. | Pusa Komal |
| Answer» B. Pusa Shubhra | |
| 8. |
Which of the following is not a sequential step of breeding disease resistance crop? |
| A. | Harvesting crops |
| B. | Screening germplasm |
| C. | The hybridisation of selected parents |
| D. | Selection and evaluation of hybrids |
| Answer» B. Screening germplasm | |
| 9. |
How does the development of disease-resistant plants enhance food production? |
| A. | Reduce the dependence on fertilizers |
| B. | Reduce the dependence of fungicides |
| C. | Reduce the dependence of water |
| D. | Reduce the dependence of air |
| Answer» C. Reduce the dependence of water | |
| 10. |
How is the resistance of the host plant towards a pathogen determined? |
| A. | By looking at the leaves |
| B. | By researching the seed |
| C. | By studying the genetic constitution of the plant |
| D. | By cutting the stem |
| Answer» D. By cutting the stem | |
| 11. |
Which of the following term is used for organisms which are attacked by pathogens? |
| A. | Crop |
| B. | Variety |
| C. | Host |
| D. | Susceptible host |
| Answer» E. | |
| 12. |
Which of the following is not responsible for crop losses? |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Earthworm |
| Answer» E. | |