CROP SCIENCES CSC 332: PRINCIPLES OF CROP PROTECTION

UNIVERSITY OF NIGERIA NSUKKA

FACULTY OF AGRICULTURE

DEPARTMENT OF CROP SCIENCE

SESSION: 2013/2014

COURSE NAME: CSC 332: PRINCIPLES OF CROP PROTECTION

1)    What is the name of the body cavity of an insect?

2)    The two short sections of an insect leg closely attached to the insect body are called (a) ________________and (b) __________________

3)  Supply insect examples of the following insect orders

S/NO               Order                          Insect Example

1.      Orrthoptera

2.      hemiptera

3.      Coleopteran

4.      Lepidoptera

4)   What is the full meaning of the following acronyms with respect to crop protection:

i)                    DDT

ii)                   IPM

5)    Give an example of an insect pest species of Cola nut tree (Cola spp)

6)     Complete the table below by supplying an insect species example of the following insect families in the order Coleoptera:

S/NO               Family                         Insect Species (Scientific name)

1.      Bruchidae  

2.      Chrysomelidae

3.      Curculioniae  

4.      Dermestidae  

7)    List two biological characteristics that could be used to distinguish weevils from beetles.

8)    In not more than 10 words each, explain what you understand by the following:

i.           Dermal toxicity,

ii.           Classical biological control method, and

iii.          Pleuron

9)      Outline any five natural methods of plant disease transmission

10)    List any five inanimate agents that could cause plant disease

11)    Enumerate any five animate agents that could cause plant disease

12)    The four necessary conditions for plant disease to occur are (a) _______ (b) _____ (c) _______ and d) ______

13)     Plant disease is always followed by disease symptom expression (True or False)