Invertebrate Zoology (ZOOS2101)
Biological Science - BS
Semester: First Semester
Level: 200
Year: 2013
REPUBLIC OF CAMEROON THE UNIVERSITY OF BAMENDA
Peace-Work-Fatherland
P. O. BOX 39 Bambili
Invertebrate zoology (ZOOS2101)
FIRST SEMESTER EXAMINATION 2012/2013
Time allowed: 3 Hours
PARTONE
1. Describe a typical shape of poriferans? …………………………………………….2marks
2. How are gases exchanged in sponges?...... 2marks
3. Discuss with examples the different classes in the Phylum Protozoa. 5marks
4. Explain the life cycle of paramecium. 4 marks
5. Distinguish with examples the different classes in Cnidario. 4.5marks
6. What arc cnidocytes? What is the name of the capsule inside the cnidocyte? What are the
biological functions of this structure? . 2.5marks
7. Concerning tissue complexity how different-are cnidarians from poriferans? 2 marks.
PART TWO
8. Draw and label the simple cross sections of an acoelomate, a pseudocoelomate , and a
coelomate organism. Ix3 = 3 marks
9. Write the number of the line and write after it the letter (s) of the column if the specie fits with
the structure.
A
B
C
D
Planaria,
lugubrus
Taenia
solium
Ascaris
lumbricoide
s
Lumbrieus
. terrestris
1
Cilia or
2
Sucker
3
Digestive
4
Mouth
5
Anus
6
Protonephridia
7
Circulatory
8
Dioecious
9
Cuticle
10. Give two differences between the cross sections of Taenia, saginata and the one of Ascaris
lumbricoides. ’4 marks
11. Classification of Annelida 3 marks
12. Draw and explain the live cycle of Onchocerca volvulus6 marks
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