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Bacterial Diseases of Crops

This quiz covers bacterial pathogens and diseases affecting various crops including sugarcane, cotton, citrus, tomatoes, potatoes, grapes, peanuts, and more. Test your knowledge of specific bacterial diseases, their causative agents, and the crops they affect.

16 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The causative bacterial agent for ‘Blister spot’ disease of apples is _______________________.

  1. Erwinia amylovora
  2. Pseudomonas syringae
  3. Agrobacterium rhizogenes
  4. Agrobacterium tumefaciens
  5. Both 1 and 3
Question 2 Multiple Choice (Single Answer)

The causing bacterial agent(s) of ‘Lint degradation’ in cotton is/are
P. Erwinia herbicola
Q. Pantoea agglomerans
R. Pseudomonas fluorescens
S. Agrobacterium tumefaciens

  1. Only P
  2. P and Q
  3. R and S
  4. P, Q, R
  5. Only S
Question 3 Multiple Choice (Single Answer)

Which of the following diseases of crucifer crops is/are assoaciated with the infection of Xanthomonas campestris?

  1. Mac leaf spot
  2. Rap leaf spot
  3. Soft rot
  4. Crown gall
  5. Black rot
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/are false?
A. Xanthomonas campestris causes leaf blight in carrot.
B. The causative agent for bud rot disease of coconut is Erwinia spp.
C. Happy disease of grapes is caused by Agrobacterium tumefaciens.

  1. A only
  2. B only
  3. C only
  4. A and B only
  5. B and C only
Question 5 Multiple Choice (Single Answer)

Which among the following diseases is/are caused by Pseudomonas syringae, in cvitrus?
P. Blast
Q. Black pit
R. Canker

  1. Only P
  2. Only Q
  3. Only R
  4. P and Q
  5. Q and R
Question 6 Multiple Choice (Single Answer)

The causative bacterial agent(s) of Pierce's disease in grapes is /are
P. Xylella fastidiosa
Q. Xylophilus ampelinus
R. Agrobacterium tumefaciens

  1. Only P
  2. Only Q
  3. Only R
  4. P and Q
  5. Q and R
Question 7 Multiple Choice (Single Answer)

The causative bacterial pathogen associated with ‘Pith necrosis’ of tomato is _________________.

  1. Xanthomonas campestris
  2. Erwinia carotovora
  3. Ralstonia solanacearum
  4. Pseudomonas corrugate
  5. Clavibacter michiganen
Question 8 Multiple Choice (Single Answer)

Match the Group-I with Group-II
Group-I (Plant diseases) 
        </strong>|<strong> Group-II (Causing bacteria)</strong>|

|P. Grey spot of apricot|1. Pseudomonas amygdali |
|Q. Stripe of cacao|2. Xanthomonas arboricola|
|R. Scab of carrot|3. Streptomyces sp.|
|S. Angular leaf spot of cucurbits|4. Erwinia caratovora|

  1. P - 1, Q - 3, R - 4, S - 2
  2. P - 2, Q - 3, R - 4, S - 1
  3. P - 3, Q - 4, R - 1, S - 2
  4. P - 2, Q - 4, R - 3, S - 1
  5. P - 2, Q - 3, R - 1, S - 4
Question 9 Multiple Choice (Single Answer)

The causing bacterial pathogen(s) for ‘Sheath brown rot’ in rice is/are
A. Pseudomonas fuscovaginae
B. Xanthomonas oryzae
C. Burkholderia glumae
D. Erwinia chrysanthemi

  1. A only
  2. B only
  3. A and B
  4. B and C
  5. C and D
Question 10 Multiple Choice (Single Answer)

Which of the following statement(s) is/are false?
P. Crown gall of mango is caused by Agrobacterium tumefaciens.
Q. Erwinia carotovora causes fruit rot disease in tomato.
R. Striatura ulcerosa disease in hemp is caused by Pseudomonas cannabina.

  1. P only
  2. Q only
  3. R only
  4. P, Q
  5. Q, R
Question 11 Multiple Choice (Single Answer)

Match the diseases in Column-I with causing pathogens in Column-II and select the correct answer using the codes given below.
Column-I 
        </strong>|<strong>Column-II</strong>|

|P. Wilt of potato|1. Ralstonia solanacearum|
|Q. Fruitlet brown rot of pineapple|2. Pseudomonas syringae|
|R. Blossom blast of pear|3. Pseudomonas solanacearum|
|S. Wilt of peanut|4. Erwinia spp.|
| |5. Polyscytalum pustulans|

  1. P - 1, Q - 4, R - 2, S - 3
  2. P - 2, Q - 4, R - 1, S - 5
  3. P - 4, Q - 1, R - 2, S - 3
  4. P - 1, Q - 4, R - 5, S - 2
  5. P - 5, Q - 4, R - 2, S - 3
Question 12 Multiple Choice (Single Answer)

The causing bacterial pathogen(s) for ‘Marbled fruit’ disease in pineapple is/are
A. Erwinia carotovora
B. Erwinia herbicola
C. Acetobacter peroxydans

  1. A only
  2. B only
  3. C only
  4. A and B
  5. B and C
Question 13 Multiple Choice (Single Answer)

The causing bacteria associated with ‘Purple stain’ disease of papaya is ___________________.

  1. Pseudomonas solanacearum
  2. Erwinia cypripedii
  3. Erwinia herbicola
  4. Pseudomonas maribos
  5. Pseudomonas caricapapayae
Question 14 Multiple Choice (Single Answer)

Identify the true statement (s).
P. Phony disease of peach is caused by the bacteria Xanthomonas arboricola.
Q. Brown spot and blight diseases in pea are caused by Pseudomonas syringae.
R. Erwinia carotovora causes soft rot disease in pineapple.

  1. Only P
  2. Only Q
  3. Only R
  4. P and Q
  5. Q and R
Question 15 Multiple Choice (Single Answer)

Match the disease in List-A with causing bacterial pathogens in List-B and select the correct answer using the codes given below
List-A 
        </strong>|<strong>List-B</strong>|

|A. Mottled stripe of sugarcane|1. Corynebacterium sepedonicum|
|B. Hollow stalk in tobacco|2. Herbaspirillum rubrisubalbicans|
|C. Basal glume rot of wheat|3. Pseudomonas syringae|
|D. Ring rot of potato|4. Erwinia spp.|

  1. A - 2, B - 4, C - 3, D - 1
  2. A - 3, B - 1, C - 4, D - 2
  3. A - 2, B - 4, C - 1, D - 3
  4. A - 4, B - 3, C - 2, D - 1
  5. A - 2, B - 1, C - 3, D - 4
Question 16 Multiple Choice (Single Answer)

Match the bacterial diseases in Group-I with causative pathogens in Group-II
Group- I 
        </strong>|<strong>Group-II</strong>|

|P. Mosaic of wheat|1. Ralstonia solanacearum|
|Q. Graville wilt of tobacco |2. Pseudomonas fluorescens |
|R. Leaf scald of sugarcane|3. Clavibacter michiganensis|
|S. Pink eye of potato|4. Drechslera teres|
| |5. Xanthomonas albilineans|

  1. P - 3, Q - 1, R - 5, S - 2
  2. P - 5, Q - 1, R - 4, S - 2
  3. P - 3, Q - 4, R - 5, S - 2
  4. P - 2, Q - 3, R - 4, S - 1
  5. P - 1, Q - 4, R - 5, S - 3
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