This quiz works best with JavaScript enabled. Home > Agriculture > Plant > Pathology > Plant Pathology – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Pathology Quiz 1 (23 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In which technique, the 'L rod' is used? A) Pour plate method. B) Spread plate method. C) Streak plate method. D) Serial dilution method. Show Answer Correct Answer: B) Spread plate method. 2. In which phase of growth curve, the cells undergoing division is equal to the number of cell death? A) Decline phase. B) Stationary phase. C) Log phase. D) Lag phase. Show Answer Correct Answer: B) Stationary phase. 3. Bacterial ooze is an example of ..... A) Signs. B) Symptoms. C) Both. D) None. Show Answer Correct Answer: A) Signs. 4. Plant pathogen includes A) Fungi. B) Bacteria. C) Viruses. D) All the above. Show Answer Correct Answer: D) All the above. 5. Which plant pathogen structure is delicate, threadlike filaments called hyphae A) Fungi. B) Algae. C) Nematodes. D) Virus. Show Answer Correct Answer: A) Fungi. 6. Mention the different sources of potable water A) Ground water. B) Snow pack water. C) Spring water. D) All of these. Show Answer Correct Answer: D) All of these. 7. Tomato spotted wilt virus is transmitted by A) Whitefly. B) Aphids. C) Thrips. D) Green Leafhopper. Show Answer Correct Answer: C) Thrips. 8. Find out the correct choice of events of 'lag phase'? A) Start synthesising the necessary proteins and start dividing. B) Cellular metabolism is accelerated and start dividing. C) Adapt to the environment. D) Cellular metabolism is accelerated and the cells are increasing in size. Show Answer Correct Answer: D) Cellular metabolism is accelerated and the cells are increasing in size. 9. Pathogen can survive in A) Crop residue. B) Weeds. C) Seeds. D) All of these. Show Answer Correct Answer: D) All of these. 10. What is the shape of Bacillus cereus A) Coccobacilli. B) Spirochetes. C) Single rods. D) Diplococci. Show Answer Correct Answer: C) Single rods. 11. Banana Bunchytop virus is transmitted by A) Aphids. B) Green Leafhopper. C) Whitefly. D) Thrips. Show Answer Correct Answer: A) Aphids. 12. Find out the advantage of turbidostat device? A) Open culture device. B) No need for current supply. C) Cell density increases. D) Photoelectric device. Show Answer Correct Answer: D) Photoelectric device. 13. Pasteurization is heating every particle of milk to .....0c to 30 minutes. A) 63. B) 73. C) 103. D) 53. Show Answer Correct Answer: A) 63. 14. What is the other name for fermenter? A) Oxidation pond. B) Biosensor. C) Bioreactor. D) Oximeter. Show Answer Correct Answer: C) Bioreactor. 15. Indian Cassava Mosaic virus is transmitted by A) Aphids. B) Whitefly. C) Green Leafhopper. D) Thrips. Show Answer Correct Answer: B) Whitefly. 16. Water purification can be done using ..... A) Sugar. B) Liquid chlorine bleach. C) Vinegar. D) Salt. Show Answer Correct Answer: B) Liquid chlorine bleach. 17. Bhendi Yellow Vein Mosaic virus is transmitted by A) Leafhopper. B) Thrips. C) Whitefly. D) Aphids. Show Answer Correct Answer: C) Whitefly. 18. Among the following, in which culture technique the chance of contamination is minimum? A) Discontinuous culture. B) Continuous culture. C) Batch culture. D) Fed-batch culture. Show Answer Correct Answer: C) Batch culture. 19. In Resazurin quality test for milk ..... colour indicates excellent quality milk A) Purple. B) White. C) Blue. D) Pink. Show Answer Correct Answer: C) Blue. 20. Pick up the odd one. A) Amphitrichous. B) Peritrichous. C) Ammonotrichus. D) Lophotrichous. Show Answer Correct Answer: C) Ammonotrichus. 21. What is a pure culture? A) A group of few dis-similar bacteria. B) Only one bacterium. C) A mixed group of colonies. D) A colony of single bacterium. Show Answer Correct Answer: D) A colony of single bacterium. 22. Rice tungro virus is transmitted by A) Green Leafhopper. B) Whitefly. C) Aphids. D) Thrips. Show Answer Correct Answer: A) Green Leafhopper. 23. Visible effects of disease on plants are called ..... A) Signs. B) Symptoms. C) Both. D) None. Show Answer Correct Answer: B) Symptoms. Related QuizzesPlant QuizzesAgriculture QuizzesPrinciples Of Plant Pathology Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books