Chapter 4
Animal Kingdom
1. What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
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2. If you are given a specimen, what are the steps that you would follow to classify it?
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3. How useful is the study of the nature of body cavity and coelom in the classification of animals?
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4. Distinguish between intracellular and extracellular digestion?
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5. What is the difference between direct and indirect development?
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6. What are the peculiar features that you find in parasitic platyhelminthes?
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7. What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
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8. Water vascular system is the characteristic of which group of the following:
(a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata
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9. “All vertebrates are chordates but all chordates are not vertebrates”.
Justify the statement.
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10. How important is the presence of air bladder in Pisces?
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11. What are the modifications that are observed in birds that help them fly?
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12. Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?
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13. Segmentation in the body is first observed in which of the following:
(a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda
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14. Match the following:
(a) Operculum (i) Ctenophora
(b) Parapodia (ii) Mollusca
(c) Scales (iii) Porifera
(d) Comb plates (iv) Reptilia
(e) Radula (v) Annelida
(f ) Hairs (vi) Cyclostomata and Chondrichthyes
(g) Choanocytes (vii) Mammalia
(h) Gill slits (viii) Osteichthyes
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15. Prepare a list of some animals that are found parasitic on human beings.
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Type By Susmita Kakati
DABP007059
