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Invertebrate Zoology Question Paper

Invertebrate Zoology

Course:Bachelor Of Education Science

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
SCIENCE AND BACHELOR OF EDUCATION
SZL 201: INVERTEBRATE ZOOLOGY

DATE: Monday 6th April, 2009

TIME: 8.00 a.m. – 10.00 a.m.

INSTRUCTIONS
Answer ALL questions in Section A and any ONE question in Section B. Within a
Section all questions carry equal marks. Illustrate your answers with diagrams and
give examples wherever appropriate.

SECTION A – (40 MARKS)
Answer ALL questions.
1.
Outline the type of cleavage that occurs in a named invertebrate egg.
2.
Explain briefly the mode of excretion and osmoregulation in freshwater rhizopods.
3.
List the characteristic features of a typical platyhelminth.
4.
Distinguish between coelomate and pseudoeoelomate invertebrates.
5.
Describe a medusa and a polyp.
6.
State the major differences between protostomia and deuterostomia evolutionary lines.
7.
Describe food procurement and digestion in ciliates.
8.
Name any two important cells found in Porifera and state their role.

SECTION B – (30 MARKS)
Answer any ONE question.
9.
Discuss the importance of Protozoans to humans.
10.
Describe in detail the adaptations of gastropod and bivalve mollusc.
11.
Write an essay on any named pseudocoelomate invertebrate.