plant pathology MCQs – Page 3

Practise focused plant pathology questions with marked answers for exam preparation and subject revision.

plant pathology Mcqs
41. Oceli is___________________?
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A. Sense organs of insect

B. Mouth parts of insect

C. Antennae in insect

D. Eye of insect
42. The symptoms of powdery mildew appears on________________?
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A. Foliage of plants

B. Roots

C. Floral parts

D. ()

43. Club root is disease of____________________?
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A. Okra

B. Tumip

C. Cabbage

D. Water melon

44. Three regions of insect body are________________?
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A. None of the above

B. Head, thorax and abdomen

C. Head, abdomen and tail

D. Head, thorax and tail

45. Which one of the following is disease of wheat_________________?
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A. Leaf rust

B. Loose rust

C. Strip rust

D. All the above
46. The my co toxins are poisonous substance produced by__________________?
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A. None of the above

B. Plants

C. Fungi

D. Bacteria

47. The entrance point for air in insects are known as _________________?
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A. Secretion

B. Spines

C. Trachea

D. Nervous system

48. The economic injury level for white fly is________________?
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A. 2-3 nymphs/leaf

B. 1 nymphs/leaf

C. 3-4 nymphs/leaf

D. 1-2 nymphs/leaf
49. __________ is gram-positive?
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A. Pseudomonas

B. Erwinia

C. Corynebacterium

D. Xanthomonas

50. Blast disease is an international disease of________________?
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A. Cotton

B. Sugarcane

C. Wheat

D. rice
51. The whole body of fungus is known as________________?
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A. Septale

B. Mycellium

C. Thallus

D. Hyphae

52. ____________ converts ammonia into nitrite?
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A. Azotobacter

B. Nitrobacter

C. Rhizobium

D. Nitrosomonas
53. The pesticide poisoning with organo-phosphates or carbamater treated with________________?
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A. Milk and hot water

B. None of the above

C. Atropine

D. Vomiting with brackishy

54. Formulation or insecticides is__________________?
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A. EC

B. Fungiments

C. Dust

D. Granular

55. Fungi damage our crops by_________________?
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A. Producing toxic substances in plants

B. feeding on flowers and fruits

C. Absorption of nutrients from plant tissues

D. Destroying green pigment of plant

56. Gummosis is the disease of_________________?
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A. none

B. Guava

C. Citrus (Lemon)

D. Mango

57. Leaf spot or tikka is the disease of____________________?
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A. Ground nuts

B. Sunflower

C. Soybean

D. none of these

58. The fungi are plants which can not prepare their food because__________________?
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A. They have no chlorophyll

B. They are very small

C. They are parasites

D. All the above

59. The Tree sends down roots from its branches to the soil is known as:___________?
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A. Oak

B. Banyan

C. Palm

D. Pine

60. Erysiphe caused the _________ disease?
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A. Powdery mildews

B. Late blight of potato

C. Covered smut

D. Downy mildews