Animal Diversity — 2021 Past Questions

University of Ilorin ZOO102: 26 questions.

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

1. Which of the following organisms possess a short flagellum and a long tentacle?
   1. Chlamydomonas
   2. Noctiluca
   3. Euglena
   4. Paramecium
2. What is the correct way to write the scientific name for humans?
   1. Homo sapiens (underlined)
   2. Homo Sapiens
   3. homo sapien (underlined)
   4. Homo Sapien
3. The most exclusive taxonomic group is the
   1. Kingdom
   2. Order
   3. Species
   4. Family
4. The most inclusive taxonomic group is the
   1. Kingdom
   2. Order
   3. Species
   4. Family
5. Euglena, though it possesses chlorophyll, is regarded as an animal due to its
   1. Possession of a centriole
   2. Possession of protoplasm
   3. Ability to move
   4. Possession of a nucleus
6. The phylum to which the ancestor of humans is believed to belong is
   1. Rhizopoda
   2. Apicomplexa
   3. Mastigophora
   4. Ciliophora
7. 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
8. A reversal of layers 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. Stomoblastula stage
   3. Scyphistoma
   4. Metamorphosis
9. Physalia physalis (the Portuguese man-of-war) belongs to the class
   1. Cubozoa
   2. Hydrozoa
   3. Scyphozoa
   4. Anthozoa
10. Which of the following cnidarian classes has a thin and non-cellular mesoglea?
    1. Anthozoa
    2. Hydrozoa
    3. Scyphozoa
    4. Cubozoa
11. The gastrovascular cavity of cnidarians is used for
    1. Digestion and respiration
    2. Digestion and excretion
    3. Respiration and excretion
    4. Circulation and digestion
12. A chitinous exoskeleton is found in
    1. Cnidaria
    2. Annelida
    3. Nematoda
    4. Arthropoda
13. In a class activity, you are given an organism with two tentacles and eight longitudinal rows of ciliary plates (comb rows). Which phylum will you place the animal in?
    1. Cnidaria
    2. Porifera
    3. Ctenophora
    4. Platyhelminthes
14. The organ of balance in Ctenophora is the
    1. Statocyst
    2. Tentaculocyst
    3. Rhopalia
    4. Ocellus
15. The larva of Ctenophora is the
    1. Cydippid larva
    2. Planula larva
    3. Amphiblastula larva
    4. Glochidium larva
16. Platyhelminthes originate their name by
    1. Having a dorso-ventrally flattened body
    2. Having a creeping sole
    3. Having a flat head
    4. Having a flat alimentary canal
17. The muscle layers in Trematoda are
    1. Longitudinal only
    2. Circular and longitudinal
    3. Circular, longitudinal, and diagonal
    4. Circular, longitudinal, and transverse
18. Which of the following organisms has a triangular head?
    1. Polystoma
    2. Taenia
    3. Planaria
    4. Fasciola
19. In what class of platyhelminthes does the intestine bifurcate into two unbranched caeca that run and end blindly at the posterior?
    1. Turbellaria
    2. Monogenea
    3. Trematoda
    4. Cestoda
20. The number of cells in the body is fixed in adulthood (eutely) in
    1. Ctenophora
    2. Fasciola (Platyhelminthes)
    3. Roundworm (Nematoda)
    4. Annelida
21. An example of an organism with a tracheal system of respiration is
    1. Crabs
    2. Termites
    3. Ticks
    4. Shrimps
22. Which cnidarian class has tentacles in the gastrovascular cavity?
    1. Scyphozoa
    2. Hydrozoa
    3. Anthozoa
    4. Cubozoa
23. Which of the following protozoan groups has no locomotive organ?
    1. Rhizopoda
    2. Sporozoans
    3. Zoomastigina
    4. Ciliata
24. Who was the first scientist to logically classify animals?
    1. Carolus Linnaeus
    2. John Ray
    3. Aristotle
    4. Charles Darwin
25. Skeletal materials in Porifera are secreted by
    1. Choanocytes
    2. Collenocytes
    3. Pinacocytes
    4. Sclerocytes
26. Arthropods are believed to have evolved from
    1. Annelid-like ancestors
    2. Mollusc-like ancestors
    3. Nematode-like ancestors
    4. Flatworm-like ancestors

Register free to unlock all 26 questions with answers and explanations