Animal Diversity — 2022 Past Questions

University of Ilorin ZOO102: 62 questions.

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

1. Which class of Platyhelminthes has cuticles?
   1. Trematoda
   2. Cestoda
   3. Turbellaria
   4. Monogenea
2. A species as the smallest diagnosable group that contains all the descendants of a single common ancestor. The above statement defines which species concept?
   1. Biological concept
   2. Typological concept
   3. Phylogenetic concept
   4. Evolutionary concept
3. Collar cells (choanocytes) in sponges help in the following except?
   1. Feeding
   2. Respiration
   3. Pore formation
   4. Water circulation
4. Another name for the class Bivalvia is?
   1. Pelecypoda
   2. Siphonopoda
   3. Polyplacophora
   4. Scaphopoda
5. What is the common respiratory pigment found in molluscs?
   1. Haemoglobin
   2. Haemocyanin
   3. Haemerythrin
   4. Chlorocruorin
6. The first set of animals to truly colonise land were the?
   1. Arthropods
   2. Molluscs
   3. Annelids
   4. Nematodes
7. Arthropods are said to have evolved from which group?
   1. Annelids
   2. Protists
   3. Nematodes
   4. Molluscs
8. A spider's body is divided into which two main parts?
   1. Prosoma and opisthosoma
   2. Head, trunk and abdomen
   3. Cephalothorax and abdomen
   4. Head and body
9. The exoskeleton of crustaceans is impregnated with?
   1. Calcium salts
   2. Calcium carbonate
   3. Wax
   4. Silica
10. What is the primary respiratory organ in most aquatic Crustacea?
    1. Book lung
    2. Gills
    3. Trachea
    4. Skin
11. In insects, air first enters the respiratory system through the?
    1. Spiracles
    2. Ossicles
    3. Trachea
    4. Gills
12. The excretory organ in many Crustaceans is the?
    1. Coxal gland
    2. Maxillary gland
    3. Green gland
    4. Malpighian tubules
13. A mosquito's body is divided into which three main parts?
    1. Head, thorax and abdomen
    2. Cephalothorax and abdomen
    3. Prosoma and opisthosoma
    4. Head and body
14. Ecdysis (molting) occurs in all of the following groups except?
    1. Spiders
    2. Insects
    3. Snakes
    4. Polychaetes
15. The prawn is a member of which phylum?
    1. Arthropoda
    2. Annelida
    3. Mollusca
    4. Cnidaria
16. Which of the following groups does the ancestor of humans belong to?
    1. Rhizopoda
    2. Zoomastigina
    3. Euglena
    4. Apicomplexa
17. Who was the first scientist to initiate classification according to natural affinities?
    1. Carl Von Linné (Linnaeus)
    2. John Ray
    3. Aristotle
    4. Charles Darwin
18. What study is primarily concerned with identifying, describing, and naming organisms?
    1. Systematics
    2. Classification
    3. Taxonomy
    4. Nomenclature
19. The study of the diversity of living things and the evolutionary relationships between them is called?
    1. Taxonomy
    2. Systematics
    3. Nomenclature
    4. Classification
20. A good classification system needs not to?
    1. Discover all animals
    2. Provide scientific names
    3. Be acceptable to all zoologists
    4. Enable easy information retrieval
21. In his book 'On the Origin of Species', which idea was NOT demonstrated by Charles Darwin?
    1. All organisms evolved from a common ancestor
    2. Organisms who share similarities have close evolutionary relationships
    3. Animals evolved from plants
    4. Evolution occurs by natural selection
22. Who stated that all organisms evolved from a common ancestor?
    1. Carl Von Linné (Linnaeus)
    2. Aristotle
    3. John Ray
    4. Charles Darwin
23. Carolus Linnaeus, in his book 'Systema Naturae', named about how many species of plants and animals?
    1. 500 species of plants and animals
    2. 1200 species of plants and animals
    3. 500 species of plants
    4. 500 species of animals
24. The hierarchical system of classification (Kingdom, Phylum, Class, etc.) was initiated in whose taxonomic scheme?
    1. Aristotle
    2. Carl Von Linné (Linnaeus)
    3. John Ray
    4. Charles Darwin
25. Which of these taxonomic ranks is the most inclusive?
    1. Species
    2. Domain
    3. Genus
    4. Kingdom
26. Which of these taxonomic ranks is the most exclusive?
    1. Domain
    2. Family
    3. Phylum
    4. Order
27. Why is the name 'Americanus' for a cockroach not acceptable?
    1. It lacks a generic name, making it invalid
    2. It is not Latinized
    3. It is a common name
    4. It does not describe the species
28. Taxonomy is not primarily studied in the realm of?
    1. Properties
    2. Rules
    3. Principles
    4. Practice
29. What is incorrect about the taxonomic report statement: 'The Mosquito in Nigeria.'?
    1. It uses a common name
    2. The common name starts with an uppercase letter
    3. It does not specify the species
    4. It mentions a geographical location
30. The diversity of animals is best shown in terms of their?
    1. Size
    2. Mode of nutrition
    3. Evolutionary history
    4. Mode of reproduction
31. Who proposed the five-kingdom system of classification?
    1. Aristotle
    2. R.H. Whittaker
    3. Charles Darwin
    4. Carl Von Linné (Linnaeus)
32. Who proposed the binomial system of nomenclature?
    1. John Ray
    2. Charles Darwin
    3. Carolus Linnaeus
    4. Aristotle
33. What is the correct way to document a genus name within a sentence in a report?
    1. It should be underlined
    2. It should be italicized
    3. It should be written in lowercase
    4. It should be capitalized and italicized
34. The term 'Nematoda' (roundworm) implies that they:
    1. Have circular muscles
    2. Possess a circular cross-sectional area
    3. Have a circular body plan
    4. Are thread-like in appearance
35. The muscle layers in Trematoda (flukes) are:
    1. Longitudinal only
    2. Circular and longitudinal
    3. Circular, longitudinal, and diagonal
    4. Circular, longitudinal, and transverse
36. A reversal of inversion at the stomoblastula stage occurs such that the flagellated cells invaginate inward and become covered by non-flagellated cells. This statement describes the onset of:
    1. Gastrulation
    2. The stomoblastula stage
    3. The scyphistoma stage
    4. Metamorphosis
37. Which of these is not a function of amoebocytes in sponges?
    1. Food storage
    2. Water circulation
    3. Food transportation
    4. Formation of sperms and oocytes
38. Despite Euglena being autotrophic, they are still considered protists with animal-like traits because:
    1. They can move
    2. They have centrioles
    3. They possess vacuoles
    4. They lack a cell wall
39. The three domains of life that are currently recognized are:
    1. Bacteria, Archaea, and Eucarya
    2. Monera, Protista, and Eucarya
    3. Prokaryota, Archaea, and Eukaryota
    4. Animalia, Plantae, and Fungi
40. In which class of flatworms is the intestine bifurcated into two unbranched caeca that run and end blindly at the posterior part of the body?
    1. Turbellaria
    2. Monogenea
    3. Trematoda
    4. Cestoda
41. Which of the following is NOT a characteristic of bivalves?
    1. They are sedentary fluid feeders
    2. They have no head
    3. They have no radula
    4. They have no tentacles
42. Arthropods are believed to have evolved from which group?
    1. Annelida
    2. Mollusca
    3. Nematoda
    4. Cnidaria
43. Which of the following groups of arthropods possess two pairs of legs on most of their body segments?
    1. Diplopoda
    2. Chilopoda
    3. Insecta
    4. Chelicerata
44. Which of the following molluscs does not possess a distinct head?
    1. Snail
    2. Slug
    3. Clam
    4. Octopus
45. What characteristic was initially used as the primary basis for classifying protozoans?
    1. Mode of reproduction
    2. Locomotor organelle
    3. Structure of the digestive system
    4. Number of nuclei
46. Which of the following is the most inclusive taxonomic rank?
    1. Phylum
    2. Class
    3. Kingdom
    4. Domain
47. Which of the following is NOT a characteristic of the chitinous exoskeleton in arthropods?
    1. It is multicellular
    2. It is rigid
    3. It is non-living
    4. It is secreted by the epidermis
48. Which of the following is a dimorphic organism?
    1. Plasmodium spp.
    2. Amoeba proteus
    3. Paramecium caudatum
    4. Euglena gracilis
49. Which of these early taxonomists was the first to create a logical and practical arrangement system for organisms?
    1. Charles Darwin
    2. John Ray
    3. Aristotle
    4. Carolus Linnaeus
50. Which of the following animals does NOT undergo ecdysis (molting)?
    1. Polychaete worms
    2. Snakes
    3. Cockroaches
    4. Insects
51. The body of a spider is divided into which two main tagmata?
    1. Head and trunk
    2. Prosoma and opisthosoma
    3. Cephalothorax and abdomen
    4. Head, thorax, and abdomen
52. Who was the first taxonomist to prioritize natural affinities and overall similarities in classification?
    1. Carl Von Linné (Linnaeus)
    2. John Ray
    3. R.H. Whittaker
    4. Aristotle
53. The largest and most significant group within the phylum Aschelminthes (Nemathelminthes) is the:
    1. Nematoda
    2. Nematomorpha
    3. Rotifera
    4. Acanthocephala
54. Why are flatworms called Platyhelminthes?
    1. Their head is flat
    2. Their body is dorso-ventrally flattened
    3. They have flat tentacles
    4. They live in flat environments
55. What is the correct arrangement of proglottid types along the length of a tapeworm's strobila?
    1. Mature, immature, gravid
    2. Immature, mature, gravid
    3. Gravid, mature, immature
    4. Mature, gravid, immature
56. What is incorrect about the statement: 'The common Mosquito in Nigeria known as Anopheles gambise (underlined)...'?
    1. The scientific name should not be underlined
    2. The specific epithet 'gambiae' should start with a capital letter
    3. The common name 'Mosquito' should start with a lowercase letter
    4. The geographical location should not be mentioned
57. The first phylum of animals to successfully colonize land was the:
    1. Arthropoda
    2. Gastropoda (Mollusca)
    3. Chordata
    4. Annelida
58. Which of the following helminths has an incomplete alimentary canal (a gut with a single opening)?
    1. Taenia solium (tapeworm)
    2. Wuchereria bancrofti (filarial worm)
    3. Fasciola hepatica (liver fluke)
    4. Ascaris lumbricoides (roundworm)
59. Which of the following is NOT true about cephalopods?
    1. A haemocoelic system is present
    2. They have a closed circulatory system
    3. They possess an internal or external shell
    4. They are active predators
60. A mosquito has which of the following body plans?
    1. Head and trunk
    2. Cephalothorax and abdomen
    3. Head, thorax and pygidium
    4. Head, thorax and abdomen
61. A hollow structure composed of a central blastocoel surrounded by cycles of flagellated cells in the posterior and non-flagellated cells in the anterior is called the:
    1. Amphiblastula
    2. Coeloblastula
    3. Stereoblastula
    4. Discoblastula
62. Which of the following parasitic worms has an incomplete alimentary canal?
    1. Taenia solium (Tapeworm)
    2. Fasciola hepatica (Liver fluke)
    3. Ascaris lumbricoides (Roundworm)
    4. Wuchereria bancrofti (Filarial worm)

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