Nature and Classification of Plant Diseases (GATE)
Comprehensive quiz covering fungal plant diseases and their causative pathogens across various crops including cereals, fruits, vegetables, and cash crops, designed for GATE agricultural science preparation.
Questions
Which of the following pairs of ‘cotton diseases - causing fungi’ is not correct?
- Lint contamination - Aspergillus flavus
- Powdery mildew - Oidiopsis gossypii
- Stem canker - Ramularia gossypii
- Black root rot - Chalara elegans
- Anthracnose - Colletotrichum gossypii
Which of the following statements is/are not correct?
- Leaf streak disease of maize is caused by Stenocarpella macrospora.
- Stem rot of potato is caused by Sclerotium rolfsii.
- Athelia arachnoidea causes crater rot in carrot.
- Cercospora brachypus causes noble rot disease in grapes.
- Only 1
- 1 and 2
- 2 and 3
- 3 and 4
- Only 4
Which of the following is the causative fungal agent for ‘Halo spot’ disease in barley?
- Pyrenophora teres f. teres
- Rhynchosporium secalis
- Blumeria graminis f. sp. hordei
- Puccinia hordei
- Pseudoseptoria stomaticola
Identify the false statement(s).
A. Tropical cotton rust of cotton is caused by Phakopsora gossypii.
B. Puccinia striiformis causes scald disease in barley.
C. The causative agent for cottony snow mold of wheat is Tilletia controversa.
- Only A
- Only B
- Only C
- A and B
- B and C
Which of the following fungal causing pathogens is responsible for ‘Anthracnose’ in raspberry?
- Collectotrichum gloeosporiodes
- Collectotrichum autatum
- Elsinoe ampellina
- Elsinoe veneta
- Gloeosporium musarum
Which of the following pairs is not one of the fungal diseases, caused by pathogens in sugarcane?
- Yellow leaf spot - Cercosporidium kopkei
- Black stripe - Peronosclerospora sacchari
- Stem canker - Cytospora sacchari
- Red rot - Cercosporidium falcatum
- Brown leaf spot - Cercosporidium longipes
Which of the following is the fungal causing pathogen for ‘Pepper leaf spot’ disease in Alfalfa?
- Stemphylium botryosum
- Leptosphaerulina briosiana
- Leptotrochila medicaginis
- Cercospora medicaginis
- Rhizoctonia leguminicola
Match the items given in Group-I with those given in Group-II and choose the correct option
| Group-I | Group-II |
| P. Angular leaf scorch of grapes | 1. Leptosphaeria sacchari |
| Q. Ring spot of sugarcane | 2. Phymatotrichopsis omnivore |
| R. Collar canker of tea | 3. Pseudopezicula tetraspora |
| S. Cotton root rot of crucifer | 4. Phomopsis theae |
- P - 1, Q - 3, R - 4, S - 2
- P - 2, Q - 3, R - 4, S - 1
- P - 3, Q - 4, R - 1, S - 2
- P - 3, Q - 1, R - 4, S - 2
- P - 4, Q - 3, R - 1, S - 1
Identify the incorrect pair about 'fungal diseases - causing pathogens’ in citrus.
- Whisker mold - Penicillium ulaiense
- Mal secco - Phoma tracheiphila
- Blue mold - Penicillium italicum
- Green fruit mold - Mucor paronychia
- Rootlet rot - Pythium rostratum
Among the following pathogens, the fungus associated with Tracheomycosis in coffee is
- Corticium koleroga
- Phoma costaricensis
- Gibberella xylarioides
- Cercospora coffeicola
- Fusarium solani
Match the items given in Column-I with those given in Column-II and choose the correct option
| Column-I |
</strong>|<strong>Column-II </strong>|
|P. Green fruit rot of almond|1. Monilinia fructicola|
|Q. Twig blight of apricot|2. Ustulina deusta|
|R. Clitocybe root rot of apple|3. Glomerella cingulata|
|S. Collar rot of cacao|4. Armillaria tabescens|
| |5. Sclerotinia sclerotiorum|
- P - 3, Q - 1, R - 5, S - 2
- P - 5, Q - 1, R - 4, S - 2
- P - 3, Q - 4, R - 5, S - 2
- P - 2, Q - 3, R - 4, S - 1
- P - 1, Q - 4, R - 5, S - 3
Match the diseases in Column-I with causing pathogens in Column-II and select the correct answer using the codes given below.
| Column-I | Column-II |
| P. Tropical cotton rust | 1. Phakopsora gossypii |
| Q. Powdery mildew of pea | 2. Trametes versicolor |
| R. Wood rot of pear | 3. Helminthosporium solani |
| S. Silver scurf of potato | 4. Erysiphe pisi |
| 5. Polyscytalum pustulans |
- P - 1, Q - 4, R - 2, S - 3
- P - 2, Q - 4, R - 1, S - 5
- P - 4, Q - 1, R - 2, S - 3
- P - 1, Q - 4, R - 5, S - 2
- P - 5, Q - 4, R - 2, S - 3
Match the items given in Group-I with those given in Group-II and choose the correct option
| Plant diseases |
</strong>|<strong>Causing pathogens</strong>|
|P. Stem rot of rice|1. Helminthosporium sp. |
|Q. False eye spot disease of wheat |2. Magnaporthe salvini|
|R. Gray spot of tea|3. Phyllosticta dusana|
|S. Target blotch of sugarcane|4. Gibellina cerealis|
- P - 1, Q - 3, R - 4, S - 2
- P - 2, Q - 3, R - 4, S - 1
- P - 3, Q - 4, R - 1, S - 2
- P - 2, Q - 4, R - 3, S - 1
- P - 2, Q - 3, R - 1, S - 4
Match the fungal diseases in Group-I with causative pathogens in Group-II.
| Group-I |
</strong>|<strong> Group-II </strong>|
|P. Leaf spot of cherries and palms|1. Claviceps purpurea|
|Q. Ergot of barley|2. Taphrina deformans|
|R. Citrus greasy leaf spot|3. Blueriella sp.|
|S. Leaf curl of peach and apricot|4. Drechslera teres|
| |5. Mycosphaerella citri|
- P - 3, Q - 1, R - 5, S - 2
- P - 5, Q - 1, R - 4, S - 2
- P - 3, Q - 4, R - 5, S - 2
- P - 2, Q - 3, R - 4, S - 1
- P - 1, Q - 4, R - 5, S - 3
Match the diseases in List-A with causative fungal pathogens in List-B and select the correct answer using the codes given below.
| List-A |
</strong>|<strong>List-B</strong>|
|A. Cottony snow mold of wheat|1. Sclerotium rolfsii|
|B. White leaf spot of crucifer|2. Coprinus psychromorbidus|
|C. Hull rot of almond|3. Rhizopus sp.|
|D. Southern blight of cotton|4. Pseudocercosporella capsellae|
- A - 2, B - 4, C - 3, D - 1
- A - 3, B - 1, C - 4, D - 2
- A - 2, B - 4, C - 1, D - 3
- A - 1, B - 3, C - 2, D - 4
- A - 2, B - 1, C - 3, D - 4