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Plant Diseases (GATE - XL)

Plant Pathology

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following citrus diseases are caused by Pseudomonas syringae?

  1. Bacterial spot
  2. Black pit
  3. Blast
  4. Citrus canker
  1. 1 and 2
  2. 1 and 4
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

  1. Claviceps purpurea causes ergot of rye.
  2. Xanthomonas oryzae causes halo blight of oat.
  3. Alternaria solani causes late blight of potato.
  1. Only 1
  2. Only 2
  3. Only 3
  4. Both 2 and 3
  5. Both 1 and 2
Question 3 Multiple Choice (Single Answer)

Identify the incorrect matching of plant disease and causative microorganism.

  1. Rapeseed stem canker: Leptosphaeria maculans
  2. Citrus canker: Xanthomonas axonopodis
  3. Apple canker: Neonectria galligena
  4. Grape canker: Eutypa lata
  5. Mulberry canker: Fusarium pini
Question 4 Multiple Choice (Single Answer)

Identify the incorrect matching.

  1. Angular leaf spot: Xanthomonas campestris
  2. Bacterial wilt: Erwinia tracheiphila
  3. Downy mildew: Pseudoperonospora cubensis
  4. Alternaria leaf blight: Alternaria cucumerina
  5. Crown and foot rot: Fusarium solani
Question 5 Multiple Choice (Single Answer)

All of the following diseases in hemp are caused by fungi, except

  1. black mildew
  2. brown blight
  3. fusarium wilt
  4. crown gall
  5. pink rot
Question 6 Multiple Choice (Single Answer)

Charcoal rot is caused by

  1. Erysiphe cichoracearum
  2. Macrophomina phaseolina
  3. Pythium ultimum
  4. Glomerella glycines
  5. Alternaria alternata
Question 7 Multiple Choice (Single Answer)

Brown blight in tea is caused by

  1. Cylindrocladium lanceolatum and Exobasidium vexans
  2. Cylindrocladium lanceolatum and Glomerella cingulata
  3. Exobasidium vexans and Glomerella cingulata
  4. Glomerella cingulata and Colletotrichum gloeosporioides
  5. Colletotrichum gloeosporioides and Cylindrocladium lanceolatum
Question 8 Multiple Choice (Single Answer)

Match the following:

 
Column I Column II
P. Bacterial canker 1. Clavibacter michiganensis
Q. Bacterial speck 2. Xanthomonas campestris
R. Bacterial spot 3. Pseudomonas syringae
S. Bacterial wilt 4. Ralstonia solanacearum
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 1; Q - 3; R - 2; S - 4
  3. P - 2; Q - 1; R - 4; S - 3
  4. P - 3; Q - 1; R - 2; S - 4
  5. P - 3; Q - 4; R - 2; S - 1
Question 9 Multiple Choice (Single Answer)

Which of the following is a pair of viral diseases of cereals?

  1. Black point and common bunt
  2. Barley yellow dwarf and common bunt
  3. Barley yellow dwarf and high plains disease
  4. High plains disease and common bunt
  5. Black point and barley yellow dwarf
Question 10 Multiple Choice (Single Answer)

Which of the following cotton diseases is/are caused by a virus?

  1. Leaf curl
  2. Leaf crumple
  3. Leaf spot
  1. Only 1
  2. Only 2
  3. Only 3
  4. Both 1 and 2
  5. Both 2 and 3
Question 11 Multiple Choice (Single Answer)

Match the following:

 
Group I Group II
P. Gray leaf spot I. Cercospora fusimaculans
Q. Latter leaf spot II. Cercospora sorghi
R. Oval leaf spot III. Ramulispora sorghicola
S. Rough leaf spot IV. Ascochyta sorghi
  1. P - III, Q - IV, R - II, S - I
  2. P - III, Q - I, R - II, S - IV
  3. P - II, Q - I, R - III, S - IV
  4. P - II, Q - IV, R - I, S - III
  5. P - I, Q - III, R - II, S - IV
Question 12 Multiple Choice (Single Answer)

Match the following:

 
Group I Group II
P. Bacterial leaf blight 1. Pseudomonas andropogonis
Q. Bacterial leaf spot 2. Erwinia carotovora
R. Bacterial stalk 3. Pseudomonas avenae
S. Bacterial stripe 4. Xanthomonas campestris
  1. P - 1, Q - 4, R - 2, S - 3
  2. P - 3, Q - 2, R - 4, S - 1
  3. P - 4, Q - 3, R - 1, S - 2
  4. P - 3, Q - 4, R - 2, S - 1
  5. P - 2, Q - 4, R - 1, S - 3
Question 13 Multiple Choice (Single Answer)

Match the columns:

 
Column I Column II
P. Angular leaf spot 1. Pseudomonas amygdali
Q. Wildfire disease 2. Pseudomonas syringae
R. Granville wilt 3. Ralstonia solanacearum
S. Hairy roots 4. Agrobacterium rhizogenes
  1. P - 1; Q - 2; R - 3; S - 4
  2. P - 1; Q - 3; R - 2; S - 4
  3. P - 2; Q - 1; R - 3; S - 4
  4. P - 3; Q - 2; R - 1; S - 4
  5. P - 1; Q - 2; R - 4; S - 3
Question 14 Multiple Choice (Single Answer)

Common root rot is a disease of wheat caused by

  1. Colletotrichum coccodes and Marssonina salicicola
  2. Fusarium culmorum and Fusarium graminearum
  3. Tilletia tritici and Tilletia laevis
  4. Tapesia yallundae and Tapesia acuformis
  5. Cochliobolus sativus and Claviceps purpurea
Question 15 Multiple Choice (Single Answer)

Match the following:

 
Group I Group II
P. Gumming disease 1. Herbaspirillum rubrisubalbicans
Q. Leaf scald 2. Xanthomonas albilineans
R. Mottled stripe 3. Acidovorax avenae
S. Red stripe 4. Xanthomonas axonopodis
  1. P - 1; Q - 3; R - 2; S - 4
  2. P - 2; Q - 3; R - 1; S - 4
  3. P - 3; Q - 2; R - 1; S - 4
  4. P - 3; Q - 4; R - 2; S - 1
  5. P - 4; Q - 2; R - 1; S - 3
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