1 Discuss the position of the Arthropoda in the animal kingdom 2 Describe the

1 discuss the position of the arthropoda in the

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1. Discuss the position of the Arthropoda in the animal kingdom. 2. Describe the characteristics of the Arthropoda by completing TABLE 1. 3. Compare the characteristics of the four subphyla of Arthropoda by completing TABLE 2. 4. Explain/define the following terms and refer to function: 4.1 Trilobita 4.2 joint appendages 4.3 uniramous appendages 4.4 biramous appendages 4.5 segmentation 4.6 tagma 4.7 tagmatazation 4.8 thorax 4.9 abdomen 4.10 cephalothorax 4.11 carapace 4.12 telson 4.13 chitien 4.14 chelicera 4.15 pedipalp
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Study unit 3 41 4.16 mandibels 4.17 maxilla 4.18 book gills 4.19 trachea 4.20 open circulatory system 4.21 hemocoel 4.22 metamorphosis 5 Make labelled drawings of the body plans of the four subphyla and state specifically the segments, tagmas and appendages. 6. Compare the characteristics of the phyla Arthropoda and Annelida with each other regarding the following aspects: skeleton, segmentation, appendages, coelom, blood system, excretory systems, respiratory system and nervous system. 7. Explain the concepts cephalisation, regionalisation and bilateral symmetry and critically discuss the significance of these concepts in the phylum Arthropoda. 8. Describe the structure of the exoskeleton and illustrate with the aid of figures. Critically evaluate the usefulness and restrictions of an exoskeleton. 9. Define the concepts open blood system and haemocoel and explain the connection between this type of blood- system and a smaller coelom. 10. Explain when, or under which conditions, an animal group can be regarded as “successful” . 11. Make a list of the reasons that can be cited as the reasons for the successfulness of the arthropods . 12. Discuss the troublesome roles of Arthropods as pests, pathogens, ectoparasites and vectors of disease-causing pathogens e.g. flies and cholera, fleas and plague, ticks and tick-bite fever, mosquitoes and malaria and tsetse flies and sleeping disease. 13. Discuss the roles of Arthropoda in agriculture and the ecosystem (e.g. pollination, decomposition, aerators of soil, mutualists with plants and animals, food chains, as food for humans, etc.) 14. Explain the difference between biological and chemical pest control. Control your own answers. Discuss problems during contact session Practical 1. Microscope work of slides and / or fresh/preserved material will be studied during the contact session. 2. Answer the following questions regarding the following table:
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Study unit 3 42 2.1 Use the drawings of the different arthropod species in the following table and classify up to subphylum level. Write down a reason for your classification in each case. 2.2 Use the photo’s in the table and design a dichotomous key. 1. 2. 3. 4. 5. 6. 7. 8.
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Study unit 3 43 9. 10.
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Study unit 3 44 3.8 PHYLUM ECHINODERMATA On completion of this study section you should be able to: Name the common characteristics of the Echinodermata and name and compare the distinguishing characteristics of the classes Asterodea, Echinoidea and Holothuroidea with examples in each class.
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  • Spring '16
  • Ambani Mudau
  • Phylum, Windelspecht

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