MCQOPTIONS
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MCQOPTIONS
This section includes 59 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The disease fire blight is related with |
| A. | Apple |
| B. | Grape |
| C. | Orange |
| D. | Coconut |
| Answer» B. Grape | |
| 2. |
Plants are made disease resistance by |
| A. | Thermal action |
| B. | Harmonal action |
| C. | Cross breeding with wild variety |
| D. | None of these |
| Answer» D. None of these | |
| 3. |
Little leaf rosetting is deficiency symptom of |
| A. | Zn |
| B. | Mn |
| C. | Cu |
| D. | B |
| Answer» B. Mn | |
| 4. |
Match the followingPlant diseaseFactorF.Citrus canker1.InsectsG.Red rot of sugarcane2.Deficency of OxygenH.Krishnakant disease of potato3.BacteriaJ.Sahu diseaseof wheat4.FungusCodesFGHJA.1234B.3421C.1312D.4132 |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 5. |
Red stripe of sugarcane is caused by bacteria |
| A. | Xanthomonas rubrilineans |
| B. | Pseudomonas solanacearum |
| C. | Pseudomonas tumefaciens |
| D. | Xanthomonas citri |
| Answer» B. Pseudomonas solanacearum | |
| 6. |
Tikka disease is related with the crop as |
| A. | Mustard |
| B. | Paddy |
| C. | Ground nut |
| D. | All of these |
| Answer» D. All of these | |
| 7. |
Leaf spot disease of rice is caused by |
| A. | Fungus |
| B. | Bacteria |
| C. | Virus |
| D. | None of these |
| Answer» B. Bacteria | |
| 8. |
White rust of crucifers is caused by |
| A. | Puccinia graminis |
| B. | Ustilago tritici |
| C. | Phytophthora infestans |
| D. | Albugo candida |
| Answer» E. | |
| 9. |
Red rust disease of tea is caused by |
| A. | Bacteria |
| B. | Lichen |
| C. | Fungi |
| D. | Green algae |
| Answer» E. | |
| 10. |
Internal cork of apple is deficiency symptom of |
| A. | Mo |
| B. | B |
| C. | Cu |
| D. | Zn |
| Answer» C. Cu | |
| 11. |
Fungus responsible for bengal famine is |
| A. | Phytolphthora infestans |
| B. | Helminthosporium oryzae |
| C. | Hemileia vastatrix |
| D. | Fusarium oxysporium |
| Answer» C. Hemileia vastatrix | |
| 12. |
Which of the following fungus is responsible for the tikka disease of groundnut |
| A. | Cercosplora personata |
| B. | Colletotrichum falcatum |
| C. | Funsarium oxysporum |
| D. | Puccinia graminis |
| Answer» B. Colletotrichum falcatum | |
| 13. |
Canker disease in lemon is due to |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Nematode |
| Answer» C. Virus | |
| 14. |
Claviceps purpurea is the causal organism of |
| A. | Smut of barley |
| B. | Erogotism of rye |
| C. | Powdery mildew of pea |
| D. | Rust of wheat |
| Answer» C. Powdery mildew of pea | |
| 15. |
Deficiency of magnesium causes |
| A. | Necrosis |
| B. | Plasmolysis |
| C. | Hydrolysis |
| D. | Chlorosis |
| Answer» E. | |
| 16. |
Most of the plants obtain nitrogen from the soil in the from of |
| A. | Free nitrogen gas |
| B. | Nitric acid |
| C. | Nitrites |
| D. | Nitrates |
| Answer» E. | |
| 17. |
Plant requires Fe and Mg for |
| A. | Synthesis of chlorophyll |
| B. | Opening and closing of stomata |
| C. | . |
| D. | . |
| Answer» B. Opening and closing of stomata | |
| 18. |
Fungus responsible for disease late blight of potato is |
| A. | Cercospora personata |
| B. | Phytophthora infestans |
| C. | Claiceps purpurea |
| D. | Scleroplora graminicola |
| Answer» C. Claiceps purpurea | |
| 19. |
Which of the following stages of deyelopment of insect is most harmful for drop? |
| A. | Egg |
| B. | Pupa |
| C. | Caterpillar |
| D. | Emago |
| Answer» D. Emago | |
| 20. |
Nitrogen fixing enzyme found in root nodules is |
| A. | Nitrogen estrase |
| B. | Nitrogenase |
| C. | Nitrase |
| D. | Nitrosomans |
| Answer» C. Nitrase | |
| 21. |
Citus Cankar is a |
| A. | Species of lemon |
| B. | Mosaic disease |
| C. | Disease in lemon |
| D. | None of these |
| Answer» D. None of these | |
| 22. |
Black heart of potato is due to |
| A. | Deficiency of copper |
| B. | Deficiency of boron |
| C. | Deficiency of oxygen |
| D. | Deficiency of potassium |
| Answer» D. Deficiency of potassium | |
| 23. |
Which one is responsible for red rot of sugarcane |
| A. | Collectorichum falcatum |
| B. | Albugo candida |
| C. | Fusarium oxysporum |
| D. | Claviceps purpurea |
| Answer» B. Albugo candida | |
| 24. |
Which of the following disease is not caused by fungus in plant |
| A. | Tikka disease of ground nut |
| B. | Red rot of sugarcane |
| C. | Green ear disease of bajara |
| D. | Mosiac disease of tobacco |
| Answer» E. | |
| 25. |
In India famous Bengal Famine accurred in 1942 by a disease in rice is called |
| A. | Late blight of rice |
| B. | Rice rust |
| C. | Leaf spot or rice |
| D. | Early blight of rice |
| Answer» D. Early blight of rice | |
| 26. |
Element playing role in nitrogen fixation is |
| A. | Mn |
| B. | Mo |
| C. | Zn |
| D. | Cu |
| Answer» C. Zn | |
| 27. |
Factor which are most responsible for disease in plant is |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Protozoa |
| Answer» B. Bacteria | |
| 28. |
Green ear disease is related with the crop |
| A. | Mustard |
| B. | Paddy |
| C. | Bajara |
| D. | Ground nut |
| Answer» D. Ground nut | |
| 29. |
Milibug is related with the crop |
| A. | Mustard |
| B. | Wheat |
| C. | Mango |
| D. | Brinjal |
| Answer» B. Wheat | |
| 30. |
Which of the following fungus causes green ear disease of bajra |
| A. | Phytophthora infestans |
| B. | Albugo Candida |
| C. | Sclerospora graminicola |
| D. | Cercosplora personata |
| Answer» D. Cercosplora personata | |
| 31. |
White bud in maize indicates acute deficiency of |
| A. | Sulphur |
| B. | Potassium |
| C. | Zinc |
| D. | Manganese |
| Answer» D. Manganese | |
| 32. |
The scientist who studied about wheat rust problem is/are |
| A. | H.C. Bose |
| B. | K.C. Pant |
| C. | Birbal Shani |
| D. | D.D. Pant |
| Answer» C. Birbal Shani | |
| 33. |
In India famous |
| A. | Late blight of rice |
| B. | Rice rust |
| C. | Leaf spot or rice |
| D. | Early blight of rice |
| Answer» D. Early blight of rice | |
| 34. |
Little leaf rosetting |
| A. | Zn |
| B. | Mn |
| C. | Cu |
| D. | B |
| Answer» B. Mn | |
| 35. |
Plants are made |
| A. | Thermal action |
| B. | Harmonal action |
| C. | Cross breeding with wild variety |
| D. | None of these |
| Answer» D. None of these | |
| 36. |
Red stripe of sugarcane |
| A. | Xanthomonas rubrilineans |
| B. | Pseudomonas solanacearum |
| C. | Pseudomonas tumefaciens |
| D. | Xanthomonas citri |
| Answer» B. Pseudomonas solanacearum | |
| 37. |
Tikka disease |
| A. | Mustard |
| B. | Paddy |
| C. | Ground nut |
| D. | All of these |
| Answer» D. All of these | |
| 38. |
Internal cork of apple |
| A. | Mo |
| B. | B |
| C. | Cu |
| D. | Zn |
| Answer» C. Cu | |
| 39. |
Green ear disease |
| A. | Mustard |
| B. | Paddy |
| C. | Bajara |
| D. | Ground nut |
| Answer» D. Ground nut | |
| 40. |
Fungus |
| A. | Phytolphthora infestans |
| B. | Helminthosporium oryzae |
| C. | Hemileia vastatrix |
| D. | Fusarium oxysporium |
| Answer» C. Hemileia vastatrix | |
| 41. |
Canker disease in lemon |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Nematode |
| Answer» C. Virus | |
| 42. |
Element playing role in |
| A. | Mn |
| B. | Mo |
| C. | Zn |
| D. | Cu |
| Answer» C. Zn | |
| 43. |
Which of the following disease is not caused by |
| A. | Tikka disease of ground nut |
| B. | Red rot of sugarcane |
| C. | Green ear disease of bajara |
| D. | Mosiac disease of tobacco |
| Answer» E. | |
| 44. |
Nitrogen fixing enzyme |
| A. | Nitrogen estrase |
| B. | Nitrogenase |
| C. | Nitrase |
| D. | Nitrosomans |
| Answer» C. Nitrase | |
| 45. |
Deficiency of magnesium |
| A. | Necrosis |
| B. | Plasmolysis |
| C. | Hydrolysis |
| D. | Chlorosis |
| Answer» E. | |
| 46. |
Factor which are most responsible for |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Protozoa |
| Answer» B. Bacteria | |
| 47. |
Citus Cankar |
| A. | Species of lemon |
| B. | Mosaic disease |
| C. | Disease in lemon |
| D. | None of these |
| Answer» D. None of these | |
| 48. |
Fungus responsible for |
| A. | Cercospora personata |
| B. | Phytophthora infestans |
| C. | Claiceps purpurea |
| D. | Scleroplora graminicola |
| Answer» C. Claiceps purpurea | |
| 49. |
Black heart of potato |
| A. | Deficiency of copper |
| B. | Deficiency of boron |
| C. | Deficiency of oxygen |
| D. | Deficiency of potassium |
| Answer» D. Deficiency of potassium | |
| 50. |
Which one is responsible for |
| A. | Collectorichum falcatum |
| B. | Albugo candida |
| C. | Fusarium oxysporum |
| D. | Claviceps purpurea |
| Answer» B. Albugo candida | |