MCQs of Plant Virology and Seed pathology

MCQs of Plant Virology and Seed pathology

1. The range of viruses in size from.

A. 10-100 μm
B. 400-1000 nm
C. 1-100 nm
D. 25-300 nm
E. None of the above

Answer - Click Here:
B

2. Sandal spike disease of Sandal is caused due to.
A. Mycoplasma
B. Bacteria
C. Virus
D. Fungi
E. None of the above

Answer - Click Here:
A

3. Which structural component is found in all viruses is.
A. The envelope
B. DNA
C. Capsid
D. Tail fibres
E. None of the above

Answer - Click Here:
C

4. The perfect stage of Colletotrichum falcatum(causes red rot of sugarcane) is
A. Glomerella cingulata
B. Glomerella tucumanensis
C. Glomerella lindaemuthiamum
D. All of these
E. None of the above

Answer - Click Here:
B

5. A chemical component that is found in all viruses is:

A.Protein
B. Lipid
C. DNA
D. RNA
E. None of the above

Answer - Click Here:
A

6.’White blisters of crucifers’ is caused by a pathogen

A. Plasmopora viticola
B. Sclerospora sorghi
C. Pythium debarynum
D. Albugo candida
E. None of the above

Answer - Click Here:
D

7. Which one of the following has a common polyhedral capsid shape of viruses?

A.Cube
B. Icosahedron
C.Pyramid
D. Sphere
E. None of the above

Answer - Click Here:
B

8. Infection of smut of maize(Ustilago maydis) occurs during

A. After flowering
B. Before flowering
C. Vegetative stage
D. Reproductive stage
E. None of the above

Answer - Click Here:
C

9. What types of viruses contain the enzyme lysozyme to aid in their infection?

A. Bacteriophage
B. Animal Viruses
C. Plant Viruses
D. Fungal Viruses
E. None of the above

Answer - Click Here:
A

10. Early blight of potato is ____ disease.

A. Seed-borne
B. Airborne
C. Soil-borne
D. All of these
E. None of the above

Answer - Click Here:
C

11. Wilt of pigeon pea is caused by.

A. Rhizopus nigricans
B. Fusarium udum
C. Aspergillus flavus
D. Gibberella indica
E. None of the above

Answer - Click Here:
B

12. Which of the following is not an RNA virus?

A. Retrovirus
B. Enterovirus
C. Rhabadovirus
D. Adenovirus
E. None of the above

Answer - Click Here:
D

Prof. Fazal Rehman Shamil
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