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Ahs2202:Horticultural Entomology Question Paper

Ahs2202:Horticultural Entomology

Course:Bachelor Of Horticulture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE (30 MARKS)
a) State any three characteristics of the phylum Arthropoda. (3 Marks) b) i) Sketch a typical antenna. (3 Marks) ii) Describe any three modifications of b(i) above with appropriate examples. (3 Marks) c) The diversity of insects is observable even in immatures. Justify this statement with reference to pupae. (5 Marks) d) i) Explain why if you cut an earthworm, some parts may take very long to die. (2 Marks) ii) State the roles of blood in insects. (3 Marks) e) i) Explain what parthenogenesis is. (1 Mark) ii) State one advantage and disadvantage each of thelytoky over sexual reproduction. (2 Marks) f) i) Describe the utility of the Berlese funnel as a tool in insect sampling. (1 Mark) ii) In the field, students of entomology used the capture – recapture method to catch 59 butterflies out of which they recaptured 10 marked and 29 unmarked. Calculate N. (3 Marks) g) i) Differentiate between hard and soft ticks. (2 Marks) ii) Describe any two beneficiaries of entomological information in the production chain. (2 Marks)
QUESTION TWO (20 MARKS)
a) Briefly discuss insects feeding habits. (7 Marks) b) Discuss the digestive system of a typical insect. (13 Marks)
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QUESTION THREE (20 MARKS)
a) Explain how to prepare and mount temporary/permanent slides to display chewing – biting mouthparts. (10 Marks) b) Describe the structure and functions of the major components of mouthparts in 3(a) above. (10 Marks)
QUESTION FOUR (20 MARKS)
a) An amateur entomologist has difficulties differentiating between members of the orders Homoptera and Hemiptera. Explain how you would guide him in the task? (10 Marks) b) Explain how to conduct insect sampling from vegetation. (10 Marks)
QUESTION FIVE (20 MARKS)
a) Discuss the relationship between insects and man. (10 Marks) b) State the factors responsible for insects great evolutionary success. (10 Marks)

Ahs2202:Horticultural Entomology Question Paper

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