Plant Diseases Multiple Choice Questions and Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

1. Name a disease of plant in which fine webbing occurs on undersides of the leaves?
  1. Spider Mites
  2. Anthracnose
  3. Mealybugs
  4. Rhizoctonia

Answer: Spider Mites

2. What primary cause causes the stomata holes of plant leaves to open and close?
  1. Water availability in the soil
  2. Guard cell swelling and shrinking
  3. Photosynthesis rates
  4. Presence of sunlight

Answer: Guard cell swelling and shrinking

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3. Name the disease of plant in which large yellow spot appears on the leaves?
  1. Bacterial Blight
  2. Bacterial Spot
  3. Aphids
  4. Botrytis

Answer: Bacterial Blight

4. Bacterial blight of Rice disease of plant is caused due to which bacteria?
  1. Pseudomonas bacteria
  2. Xanthomonas citri bacteria
  3. Xanthomonas oryzae bacteria
  4. None of the above

Answer: Xanthomonas oryzae bacteria

5. Yellow leaf of citrus is caused due to
  1. Copper deficiency
  2. Boron deficiency
  3. Molybdenum deficiency
  4. Calcium deficiency

Answer: Molybdenum deficiency

6. Which of the following is NOT an autoimmune disease?
  1. Filariasis
  2. Hashimoto's thyroiditis
  3. Psoriasis
  4. More than one of the above

Answer: Filariasis

7. Which disease of plant is known as ring disease?
  1. Citrus Canker
  2. Black arm of cotton
  3. Wilt of Potato
  4. None of the above

Answer: Wilt of Potato

8. In which disease of plant white mildew appears typically on underside of leaves?
  1. Cylindrocladium
  2. Angular leaf Spot
  3. Downy Mildew
  4. Black arm of Cotton

Answer: Downy Mildew

9. In which disease of plant stem rot at soil line with brown to red lesions?
  1. Rhizoctonia
  2. Angular leaf Spot
  3. Bacterial Blight
  4. Bacterial Spot

Answer: Rhizoctonia

10. The disease related with apple is known as:
  1. red rust disease
  2. tikka disease
  3. green ear disease
  4. fire blight

Answer: fire blight

11. Bunchy top of banana plant disease is caused due to:
  1. Bacteria
  2. Fungus
  3. Virus
  4. None of the above

Answer: Virus

12. Partial wilting and loss of turgidity are deficiency symptoms of
  1. Chlorine
  2. Nitrogen
  3. Molybdenum
  4. Potassium

Answer: Chlorine

13. Name a disease of plant in which dark to light brown rot forms around wounded plant tissue?
  1. Gray Mold
  2. Citrus Canker
  3. Spider Mites
  4. None of the above

Answer: Gray Mold

14. In which of the following disease of plants chlorophyll of the leaves get destroyed and leaves get strinked ?
  1. Mosaic disease of Tobacco
  2. Tundu disease of Wheat
  3. Citrus Canker
  4. More than one of the above

Answer: Mosaic disease of Tobacco

15. In which of the following diseases of plant chlorophyll of the leaves get destroyed and leaves get shrinked?
  1. Mosaic disease of tobacco
  2. Citrus Canker
  3. Tundu disease of wheat
  4. Rhizoctonia

Answer: Mosaic disease of tobacco

16. Name the disease of plant in which leaves, branches, fruits all are affected?
  1. Spider Mites
  2. Mealybugs
  3. Aphids
  4. Citrus Canker

Answer: Citrus Canker

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