Animal Diversity — 2019 Past Questions

University of Ilorin ZOO102: 67 questions.

Topics: Diversity of animal forms, structures, and functions., Multicellularity and embryonic layer development., General classification of the animal kingdom, Animal phylogenetics tree, animal systematics, geographical distribution of animal life., History of animal diversity, categorization, New trends in systematics

1. Chitons have how many pairs of metanephridia?
   1. 0 pairs
   2. 1 pair
   3. 2 pairs
   4. 4 pairs
2. The larval stage of ctenophorans is known as:
   1. Cydippid
   2. Amphiblastula
   3. Planula
   4. Trochophore
3. The most advanced class within the phylum Cnidaria is:
   1. Anthozoa
   2. Cubozoa
   3. Scyphozoa
   4. Hydrozoa
4. The class of Cnidaria that is composed of only the polyp form is:
   1. Anthozoa
   2. Cubozoa
   3. Scyphozoa
   4. Hydrozoa
5. Which of the following does not exhibit ecdysis?
   1. Snake
   2. Cockroach
   3. Polychaete worm
   4. Insect
6. The excretory system in Planaria is composed of:
   1. Flame cells
   2. Kidneys
   3. Body surface
   4. Malpighian tubules
7. The sense organ of ctenophorans is called a:
   1. Nematocyst
   2. Tentaculocyst
   3. Statocyst
   4. Ocellus
8. Which of the following has a closed circulatory system?
   1. Cuttlefish
   2. Chiton
   3. Neopilina
   4. Gastropod
9. What is the primary excretory product of a devil fish (octopus)?
   1. Nitrogen
   2. Ammonia
   3. Urea
   4. Uric acid
10. The intermediate host of Taenia saginata is:
    1. Dog
    2. Goat
    3. Sheep
    4. Cattle
11. Entamoeba histolytica is classified under the phylum:
    1. Ciliophora
    2. Protista
    3. Rhizopoda
    4. Apicomplexa
12. Sponges (Porifera) are classified based on their:
    1. Canal system only
    2. Canal system and nature of osculum
    3. Canal system and skeletal material
    4. Body symmetry and spicules
13. The exclusively polypoid class of cnidarians is:
    1. Scyphozoa
    2. Anthozoa
    3. Cubozoa
    4. Hydrozoa
14. The gastrovascular cavity of anthozoans is partitioned by:
    1. Septa
    2. Partitions
    3. Mesenteries
    4. Trabeculae
15. The pseudocoelomates are:
    1. Porifera
    2. Annelida
    3. Nematoda
    4. Cnidaria
16. Species under Nematoda include all except:
    1. Necator americanus
    2. Ascaris lumbricoides
    3. Nereis diversicolor
    4. Wuchereria bancrofti
17. The only molluscan class whose members undergo torsion is:
    1. Bivalvia
    2. Gastropoda
    3. Cephalopoda
    4. Polyplacophora
18. 'Arthropoda' means:
    1. Soft-bodied
    2. With a cuticle
    3. Jointed foot
    4. With appendages
19. Ctenophorans have adhesive epidermal cells called:
    1. Statoliths
    2. Colloblasts
    3. Nematocytes
    4. Cnidocytes
20. A disadvantage of unicellular organisms is:
    1. Low waste generation
    2. Little energy requirement
    3. Total dependence on the environment
    4. Cellular independence
21. Which class of Phylum Cnidaria is exclusively polypoid?
    1. Anthozoa
    2. Scyphozoa
    3. Hydrozoa
    4. Cubozoa
22. Which is not a function of the tegument in platyhelminthes?
    1. Reproduction
    2. Secretion
    3. Absorption
    4. Protection
23. Which of these is not a nematode?
    1. Wuchereria bancrofti
    2. Onchocerca volvulus
    3. Ascaris lumbricoides
    4. Nereis diversicolor
24. Which group out of the following lacks trophic (feeding) ability?
    1. Sporozoans
    2. Ciliates
    3. Amoebas
    4. Euglenoids
25. The most advanced class of cnidarians is:
    1. Scyphozoa
    2. Anthozoa
    3. Cubozoa
    4. Hydrozoa
26. A distinguishing characteristic of Ciliophora is being:
    1. Unicellular and binucleated
    2. Multinucleate
    3. Motile via flagella
    4. Exclusively parasitic
27. Confusion in the classification of living organisms has been increased by:
    1. Evolution
    2. Reproduction
    3. Distribution
    4. Extinction
28. What is the primary nitrogenous excretory product of cephalopods?
    1. Uric acid
    2. Ammonia
    3. Urea
    4. Guanine
29. A good classification system will encourage the following, except:
    1. Universal acceptance by zoologists
    2. Inability to classify all animals
    3. Easy retrieval of information
    4. Easy identification of species
30. Multicellularity brings about the following except:
    1. Increased surface area to volume ratio
    2. Large size
    3. High degree of specialization
    4. Cellular interdependence
31. What is the approximate proportion of animals in the living world?
    1. 22 percent
    2. 73 percent
    3. 5 percent
    4. 50 percent
32. The branch of taxonomy which involves grouping on the basis of evolutionary and genetic relationship is:
    1. Phyletic classification
    2. Phenetic classification
    3. Classical taxonomy
    4. Systematics
33. Which of the following is not true about phylum Cnidaria (Radiata)?
    1. They are triploblastic
    2. They are radially symmetrical
    3. Their body cells form perfect tissues
    4. They have an incomplete alimentary canal
34. Platyhelminthes are best described as:
    1. Triploblastic, acoelomate, flat animals
    2. Diploblastic, acoelomate, flat animals
    3. Triploblastic, coelomate, flat animals
    4. Triploblastic, pseudocoelomate, flat animals
35. Animals without a coelom or pseudocoel are termed:
    1. Acoelomate
    2. Pseudocoelomate
    3. Coelomate
    4. Multicellular
36. The first animal group to possess a head is:
    1. Porifera
    2. Nematoda
    3. Platyhelminthes
    4. Annelida
37. Well-developed nervous system and sense organs are present in members of the class:
    1. Turbellaria
    2. Cestoda
    3. Trematoda
    4. Digenea
38. Fasciola (liver fluke) belongs to the order:
    1. Monogenea
    2. Digenea
    3. Aspidocotylea
    4. Cestoda
39. Nematodes are:
    1. Acoelomate
    2. Coelomate
    3. Pseudocoelomate
    4. Mesocoelomate
40. Respiration in Ascaris is:
    1. Cutaneous
    2. Aerobic
    3. Anaerobic
    4. Both aerobic and anaerobic
41. The mode of nutrition in Ascaris is:
    1. Holozoic
    2. Holophytic
    3. Saprozoic
    4. Saprophytic
42. The level of organization in nematodes is:
    1. Cellular level
    2. Tissue level
    3. Organ level
    4. Organ system level
43. The respiratory pigment of Annelida is:
    1. Cyanin
    2. Hemoglobin
    3. Hemocyanin
    4. Erythrocruorin
44. Development is direct in:
    1. Earthworm
    2. Tapeworm
    3. Bristleworm (Polychaete)
    4. Roundworm (Ascaris)
45. A common feature to tapeworm, liver fluke, and planaria is:
    1. Segmentation
    2. Bluntness
    3. Coelom
    4. Flatness
46. The digestive system of nematodes has two openings and is in the form of a/an:
    1. Gastrovascular cavity
    2. Alimentary canal
    3. Incomplete tract
    4. Blind sac
47. Nematodes lack a respiratory system and a:
    1. Digestive system
    2. Nervous system
    3. Circulatory system
    4. All of the above
48. The cuticle of Ascaris is primarily used for:
    1. Absorption
    2. Protection from host enzymes
    3. Respiration
    4. Locomotion
49. Nematoda means:
    1. Pointed ends
    2. Pointed bodies
    3. Thread-like
    4. Both A and B
50. An oligochaete diagnostic feature does not include:
    1. Mostly marine
    2. Separate sexes
    3. Eyes absent
    4. Mostly free-living
51. Which of these features is considered to have originated in annelids?
    1. Strobilization
    2. Regeneration
    3. Sexual reproduction
    4. Metameric segmentation
52. A diagnostic feature restricted to annelids is the:
    1. Segmentation
    2. Chitinous cuticle
    3. Hydrostatic skeleton
    4. Clitellum
53. Respiration in tapeworm is mainly:
    1. Aerobic
    2. Anaerobic
    3. Through diffusion
    4. Facultative
54. Proglottids in tapeworms proliferate from the:
    1. Scolex (head)
    2. Neck
    3. Rostellum
    4. Mature proglottid
55. The function of flame cells in Planaria is:
    1. Excretion
    2. Reproduction
    3. Circulation
    4. Osmoregulation
56. The body fluid cavity in nematodes is the:
    1. Coelom
    2. Spongocoel
    3. Enteron
    4. Pseudocoelom
57. Digestion in Planaria is:
    1. Intracellular
    2. Extracellular
    3. Intercellular
    4. Both intracellular and extracellular
58. Osmoregulation is carried out in Planaria by the:
    1. Flame cell system
    2. Contractile vacuole
    3. Nucleus
    4. Mitochondria
59. The intermediate host of Schistosomes is a:
    1. Snail
    2. Housefly
    3. Blackfly
    4. Tsetse fly
60. Elephantiasis in humans is caused by:
    1. Guinea worm
    2. Hookworm
    3. Ringworm (a fungus)
    4. Filaria worm
61. Oligochaetes use ___ for locomotion.
    1. Cilia
    2. Flagella
    3. Radula
    4. Setae
62. Which of the following is present in Oligochaeta?
    1. Distinct head
    2. Eyes
    3. Tentacles
    4. Setae
63. The largest class of Annelids is:
    1. Polychaeta
    2. Oligochaeta
    3. Hirudinea
    4. Archiannelida
64. The name Annelida was first used in the year:
    1. 1803
    2. 1904
    3. 1890
    4. 1809
65. Ascaris normally inhabits the:
    1. Stomach
    2. Appendix
    3. Small intestine
    4. Large intestine
66. The type of circulatory system typical of an annelid is:
    1. Open
    2. Closed
    3. Single
    4. Double
67. The mode of respiration in an earthworm is:
    1. Cutaneous
    2. Aerobic
    3. Through gills
    4. Through lungs

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