Animal Diversity — 2025C Past Questions

University of Ilorin ZOO102: 39 questions.

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

1. In which year was the word 'taxonomy' coined?
   1. 1758 by Carl Linnaeus
   2. 1813 by A.P. de Candolle
   3. 1859 by Charles Darwin
   4. 1901 by Hugo de Vries
2. Which of the following is not considered a tetrapod?
   1. Lizard
   2. Snake
   3. Frog
   4. Man
3. Who proposed the theory of three-fold parallelism?
   1. Charles Darwin
   2. Ernst Haeckel
   3. Louis Agassiz
   4. Karl von Baer
4. The non-parasitic class of Platyhelminthes is:
   1. Cestoda
   2. Monogenea
   3. Digenea
   4. Turbellaria
5. A diagram for studying relationships among organisms which places them on branches is a:
   1. Phylogenetic Tree
   2. Cladogram
   3. Dichotomous Key
   4. Taxonomic Hierarchy
6. Classification of organisms is primarily based on:
   1. Peculiarities only
   2. Similarities only
   3. Similarities and peculiarities
   4. Similarities and differences
7. Which is the most successful class in Kingdom Animalia?
   1. Mammalia
   2. Aves
   3. Insecta
   4. Arachnida
8. The hypothetical last common ancestor of all bilaterally symmetrical animals is known as:
   1. Urbilaterian
   2. Progenote
   3. Choanoflagellate
   4. Metazoan
9. Karl von Baer is best known for his law of:
   1. Embryology
   2. Recapitulation
   3. Superposition
   4. Independent Assortment
10. Nematodes exhibit which level of organization?
    1. Cellular
    2. Tissue
    3. Organ-tissue
    4. Tissue-system (Organ-system)
11. During which period did jawless fishes undergo wide and rapid spread?
    1. Cambrian
    2. Ordovician
    3. Silurian
    4. Devonian
12. Which of the following is NOT an importance of biological classification?
    1. To study relationships between animals
    2. To study interrelationships between animals and their environment
    3. To study clear differences between animals
    4. To study the extensive relationship between animals and plants
13. Which part of the early embryo forms the embryo proper?
    1. Trophoblast
    2. Embryoblast (Inner Cell Mass)
    3. Blastocoel
    4. Yolk sac
14. The systematic arrangement of plants and animals in a particular fashion is called:
    1. Binomial Nomenclature
    2. Taxonomy
    3. Systematics
    4. Identification
15. Which group of animals originated during the Mesozoic (Triassic) era?
    1. Amphibians
    2. Reptiles
    3. Mammals
    4. Bony Fishes
16. The Bering Strait is an example of a:
    1. Filter Bridge
    2. Land Bridge
    3. Corridor Bridge
    4. Sweepstakes Route
17. Which of the following is NOT derived from the mesoderm?
    1. Liver
    2. Kidney
    3. Heart
    4. Bones
18. The second largest phylum in the animal kingdom is:
    1. Arthropoda
    2. Mollusca
    3. Chordata
    4. Annelida
19. A gastrovascular cavity is primarily used for:
    1. Respiration
    2. Digestion
    3. Circulation
    4. Excretion
20. The intermediate host of Taenia saginata (beef tapeworm) is:
    1. Pig
    2. Human
    3. Cattle
    4. Snail
21. The phylum Arthropoda derives its name from its:
    1. Hard Exoskeleton
    2. Jointed Appendages
    3. Segmented Body
    4. Compound Eyes
22. Insects, Arachnids and Crustaceans are all from what phylum?
    1. Annelida
    2. Mollusca
    3. Arthropoda
    4. Nematoda
23. There are approximately how many described species on Earth?
    1. 500,000 - 1 million
    2. 1.5 - 2 million
    3. 5 - 10 million
    4. Over 100 million
24. A hollow ball of cells during the early stage of embryogenesis is called?
    1. Gastrula
    2. Morula
    3. Blastula
    4. Neurula
25. Which taxonomic group is broader than genus but smaller than order?
    1. Family
    2. Species
    3. Class
    4. Kingdom
26. Which of these combinations of body plan features is NOT possible?
    1. Radially symmetrical and diploblastic
    2. Triploblastic and coelomate
    3. Diploblastic and eucoelomate
    4. Triploblastic and acoelomate
27. Which of the following is NOT a deuterostome?
    1. Echinodermata
    2. Chordata
    3. Arthropoda
    4. Hemichordata
28. ____ is the science of naming, defining, and classifying organisms based on their diversity.
    1. Ecology
    2. Physiology
    3. Systematics
    4. Genetics
29. The sudden increase in the diversity of many animal phyla in the fossil record is called the?
    1. Permian Extinction
    2. Cretaceous Expansion
    3. Cambrian Explosion
    4. Jurassic Radiation
30. The body of a mosquito is divided into which three tagmata?
    1. Head, prostomium and Abdomen
    2. Cephalothorax and Abdomen
    3. Head, Thorax and Abdomen
    4. Head, Cephalothorax and Abdomen
31. Which of the following organisms has a cellular level of organisation?
    1. Sponges
    2. Amoeba
    3. Euglena
    4. Hydra
32. The non-parasitic class of Platyhelminthes is?
    1. Cestoda
    2. Trematoda
    3. Turbellaria
    4. Monogenea
33. Cilia, flagella, and pseudopodia are locomotory structures found in which group of organisms?
    1. Porifera
    2. Annelida
    3. Protozoans
    4. Nematoda
34. The classification of metazoans that is composed of organisms with a cellular level of organization is?
    1. Eumetazoa
    2. Parazoa
    3. Bilateria
    4. Radiata
35. Willis's 'Age and Area' theory was challenged by Fernald's theory, which showed that?
    1. Some plant species spread slowly while some spread rapidly
    2. Geographical range has nothing to do with age
    3. Older species are always more widespread
    4. Species distribution is solely determined by climate
36. Which of the following organisms originated in the Ediacaran period?
    1. Trilobites
    2. Dinosaurs
    3. Jellyfish
    4. Mammals
37. What is a primary importance of biological classification or systematics?
    1. To assign common names to all organisms
    2. To show the interrelationships between animals
    3. To ensure all organisms have a unique identifier
    4. To group organisms based solely on their color
38. Which cellular transition plays a major role in the morphogenetic movements of embryogenesis?
    1. Anaphase
    2. Metaphase
    3. Epithelial-Mesenchymal Transition (EMT)
    4. Cytokinesis
39. What best describes the interconnection between evolution and development?
    1. Evolution creates new body plans, development destroys them
    2. They are completely separate biological fields
    3. Evolution encourages diversity and development reproduces it over generations
    4. Development dictates the pace of evolution with no feedback

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