MCQs of Plant Virology and Seed pathology

By: Prof. Dr. Fazal Rehman | Last updated: March 3, 2022

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