AET 211 Insect Ecology, Principles of Pest Management and Natural Enemies (2+1) Question Paper

 

UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE
Final External Examination for II Year I Semester 2024-25
AET 211 Insect Ecology, Principles of Pest Management and Natural Enemies (2+1)
Date: 19.02.2025
Time: 55 Mins. (11.20 AM to 12.15 PM)
Marks: 25

PART - B : DESCRIPTIVE TYPE QUESTIONS

Instructions:

1. Answers for Part-B (Descriptive type questions) should be written only in the answer booklet.

2. Answers should be written only within the box provided in the answer booklet.

II. ANSWER ANY FIVE OF THE FOLLOWING (5 x 2 = 10)
51. What are the reasons for outbreak of the pest?
52. Write the ideal qualities of an insecticide.
53. Define Host plant resistance and what are the mechanisms of resistance?
54. Write the differences between parasitoids and predators.
55. Define pest surveillance and forecasting. Write about the usefulness of the insect forecasting.
56. Write the classification of insects based on economic importance.
57. What is the difference between mode of action of Organophosphorus and Organochlorines.

III. ANSWER ANY THREE OF THE FOLLOWING (3 x 5 = 15)
58. Write the classification on insecticides. Explain the mode of entry with suitable examples.
59. Define IPM and list different component of IPM. Explain with examples the cultural control as a component in IPM.
60. List out the abiotic factors and explain in detail how temperature affects the growth and development of insects.
61. Write about the entomopathogenic virus, mode of action, symptoms and mass multiplication of NPV.
62. What is biological control? Write about their approaches, advantages and disadvantages of biological control and mention examples of successful biocontrol agents.