LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & BIOTECH.

 

DE 5

THIRD SEMESTER – APRIL 2008

AZ 3200 / ZO 3200 – AGRICULTURAL ENTOMOLOGY

 

 

 

Date : 05/05/2008                Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

PART – A                       Answer ALL the questions                              10 x 2 = 20  Marks

1. What is stomach poison?
2. Explain a light trap.
3. What is royal jelly?
4. Write a note on fumigants.
5. What is an earthen cocoon?
6. Give the scientific names of any two paddy pests
7. What is IPM?
8. What is a biomagnification?
9. Comment on camera lucida.
10. Draw labeled diagram of mouthparts of butterfly.

 

PART – B                Answer any FOUR of the following                    4 x 10 = 40 Marks

1.   Explain the life cycle of locusts and their control measures.
2.   Describe any three pests of cotton and their prophylaxis.
3.   Write notes on Heliothus armigera
4.   What are the different types of sterile termites?
5.   Write account on any three pest of groundnut and their control.
6.   Classify insecticides based on mode of action.

 

PART – C           Answer any TWO of the following                2 x 20 = 40 Marks

1.  Discuss IPM.
2.  Write an essay on biological control.
3.  Give the classification of insects.
4.  Explain the different types of mouthparts in insects.

 

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