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Zool 102: Higher Inverterbrates Question Paper

Zool 102: Higher Inverterbrates 

Course:Bachelor Of Science

Institution: Egerton University question papers

Exam Year:2012



SECTION A: ANSWER ALL QUESTIONS

1. State four roles of water vascular system of echinoderms. (4 Marks)
2. Outline the features of Phylum Onychophora that are typical of arthropods. (4 Marks)
3. Distinguish between the two classes of Sub-phylum Asterozoa. (8 Marks)
4. Briefly explain why the Arcon worms are considered model chordates of an ancient
link between echinoderms and chordates. (7 Marks)
5. Describe the structure and functions of a lophophore. (6 Marks)
6. Outline the excretory structures found in members of the phylum arthropoda. (8 Marks)
7. Outline the economic importance of arthropods. (5 Marks)
8. Describe the morphology of arachnids. (8 Marks)

SECTION B: ANSWER ONE QUESTION ONLY

9. Using relevant examples, explain how gastropods obtain their food. (20 Marks)
10.Describe features that distinguish the annelid classes. (20 Marks)




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