General Entomology Question Paper

General Entomology

Course:Bachelor Of Education

Institution: Kenyatta University question papers

Exam Year:2007

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2007/2008
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
OF SCIENCE AND BACHELOR OF EDUCATION
SZL 403: GENERAL ENTOMOLOGY
DATE: Wednesday 28th November 2007
TIME: 11.00 a.m. - 1.00 p.m.
INSTRUCTIONS
Answer ALL questions in Section A and any ONE question in Section B. Within
each section, ALL questions carry equal marks. Illustrate your answers with diagrams
and give examples where appropriate.
~,
SECTION A: (40 Marks) - Answer all questions.
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1.
Describe briefly two forms of insect head orientation 'Y4t~ect to the rest of the body.
2.
Differentiate between primary and seCOndary-#entation in insects.
3.
Outline the beneficial effects of insects ~e specific examples.
4.
Distinguish between the following
(i)
Apterygota and Pteryg
(ii)
Holometabolous amimetabolous development.
(iii)
Metamerism and tagmosis
(iv)
Ovoviviparous and parthenogenesis
(v)
Postmentum and prementum
5.
(a)
Explain the terms classification and identification.
(b)
Describe briefly any three methods used in insect identification.
6.
(a)
Name three insect hormones.
(b)
For each hormone state one function related to growth and development.
7.
Explain briefly and five characteristic features which adapt aquatic insects to their environment.
8.
(a)
Draw and label a generalized insect wing.
(b)
State the functions of insect wings.

SECTION B: (30 Marks): Answer any ONE question.
9.
Describe the morphology and functions of the basic biting and chewing mouthparts found in the class Insecta.
10
Write an essay on the diversity of insect antennae and give their functions.

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