VERTEBRATE ZOOLOGY (ZOOS2202)

Biological Science - BS

Semester: Second Semester

Level: 200

Year: 2014

Answers (200 )
REPUBLIC OF CAMEROON REPUBLIQUE DU CAMEROUN
Peace-Work-Fatherland Paix-Travail-Patrie
MINISTER OF HIGHER EDUCATION MINISTERE DE L’ENSEIGNEMENT SUPERIER
THE UNIVERSITY OF BAMENDA
UNIVERSITE DE BAMENDA
FACULTY OF SCIENCE
FACULTE DES SCIENCES
P.O. Box 39 Bambili
Tell: (+237) 22 81 63 50
SECOND SEMESTER EXAM
COURSE TITLE: VERTEBRATE ZOOLOGY COURSE CODE: ZOOS2202
Halls: PBA 07 & Asanji TIME: 2.30-5.30 (3hours) Date: 22. 07. 2014
PART I
1) Label the picture (do not draw). 4.5 marks
Figure (i) ………..
2) Which letters characterised the chordate? ………………. 2 marks
3) Give the role of “e” and its evolution in the Fishes………………. 2 marks
4) Fill the table. Just write down the letters and the answers 12.5 marks
Group Agnatha Gnathostomata
Myxinoidea Petiomyzontia Chondrichthyes Osteichythes
Number of gill openings j k l m
Number of nostril n o
Skeleton / p Q
Swim bladder (present
or absent)
r s T
Types of scales / u V
Operculum absent w Present
Type of caudal fin x y Z
Common name aa ab ac Ad
Fecundation ae af ag /
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5)
Give the corresponding example to each group.
Group Urochordata Cephalochordate Chondrychthyes Osteichthyes
example 1 2. 3. 4.
Latimeria chaiumnae, Branchiostoma lanceolatum, Botryllus schlosseri,
Bhincodon typus
PART II
A- Instructions for multiple choice questions (10 marks): Right answer =1
mark; Wrong answer= - 0.5 mark; no answer = 0 mark. Write only the letter
corresponding to the correct answer.
1 - The amphibian urodela of Sirenidea family like siren:
The larva lacks gills; b) the larva has gills; c) larva has lungs and gills; d)
larva has gflls or lungs.
2- The members of Apoda or Gymnophiona order Of Amphibians:
a) Have limbs and limb girdles; b) have limbs and lack limb girdles; a lack
limbs and limb girdles.
3- The three chromatophores responsible of amphibians colouration are:
a) Xanthophores, chlorophores and iridophores; b) Xanthophores,
melanophores and iridophores; c)melanophores, chlorophores and
iridophores d) Xanthophores, greenopbore and iridophores.
4- The part of amphibian brain responsible of hearing and Balance is:
a) Telencephalon; b) mesencephalon; d) rhombencephalon; d) midbrain; e)
forebrain.
5- During the practical you observed the structure of amphibian liver and you
noticed that it has a) Two lobes; b) five lobes; c) three lobes; d) four lobes; e)
one lobe.
6- Under normal conditions when lung breathing of amphibians
predominates, carbon dioxide is lost primarily:
a) Across the lungs; b) across the skin; c) across the mouth; d) across the
lungs and skin.
7- The anamniotic egg:
a) Lacks shell; b) has shell and carapace; c) bas carapace; d) has shell and
lacks carapace.
8- The outer layer of turtle shell is composed by:
a) The bones; b) keratin; c) Scales; d) both bones and keratin.
9- The most typical pattern of movement for apods reptiles is:
a) Rectilinear movement; b) lateral undulation; c) concertina movement
10-The temperature-dependent reptiles:
a) Lack sexual chromosomes; b) have sexual chromosomes; c) haven’t
chromosomes.
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B- Identify the intruder of the following lists: 3 marks
a) Bar fish. Shark, Mackerel, Torpedo, carp, Salmon, and Perch.
b) Hemidactylus, mabuia, Lacerta mura lis, Agama agama, Varanus
niloticus, Vipera.
c) Lamprey, Shark, Mackerel, Toad, Turtle, Hen and Lion.
d) Chameleo chameleon. Python sebae, Boa constrictor, Maja naja.
e) Crocodile, Toad, Hen, Tortoise, Gecko, Cow, Pigeon, Bat, Human and Bar
fish.
f) Python reticulatus. Python sebae. Boa constrictor. Naja naja.
C- During the practical you observed and described the digestive system of
the amphibians. Draw and annotate the digestive system of toad. 2 marks
D-Complete the following table: 5 marks
Characteristics
Species
Common
characteristics
Specific
characteristics
1-
Lamprey
2-
Shark
3-
4-Frog
5-Crocodile
6-
Pigeon
7- Mouse
PART III
Instuctions: Answer all questions; correct answer =0.5 mark, wrong answer =-
0.5 mark
11. Birds maintain a body temperature in the range of ……?
a- 38-45
o
C b-104-111
o
C c-20-22
o
C d-0-4
o
C
2. Birds replace their feathers periodically in a process called
a- shedding b-migration c-preening d-poulting
3. Contour or body feathers provide birds with ……
a- streamlining b-insulation c-waterproofing d- all of the above
4. What are the egg-laying animals known as ………?
a- oviparous b-herbivorous c-carnivorous d-reptile
5. What is the study of birds called
a-Zoology b-ornithology c-Oology d-lchthyology
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6- The unique feature of a bird that allows them to always breathe fresh air is
the
a-bronchi b-bronchioles c-arabronchi e-spiracles
7. The respiratory system of mammals differ from those of other vertebrate by
the presence of—
a-lungs b-diaphragm c-parabronchi d-bronchi
8. Whlch of the reflowing animals have air sacs attached to their lungs?
a-birds b-amphibians c-reptiles d-mammals e-all of the above
9. What bird like characteristic does Archaeopteryx possess?
a-fused bones in their skulls b-long tall c-sternum with keel c-claws on their
front appendages -
10. Which of the following is not a characteristic of all species of birds?
a-flight b-oviparity c-feathers d-four-chambered heart
11. The …….. of modern birds is/are relatively long when compared to
reptiles
a-ribs b-neck c-tail d-caudal vertebrae
12. The gland that produces oil used to lubricate the feathers of birds is
located
a-at the base of the neck b- the base of the tall c-in the crop d-in the axilla
13. The archosaur group that is most closely related to the ancestor of the
birds include the
a-saurichians b-theropods c-ornithishians d-pterosaurs
14. The structure responsible for sound production in birds is the
a- syrinx b-larynx c-trachea d-pharynx
15. Birds that are active immediately after hatching are known as
a-altricial b-precodal c-cambered d-polygynous
16. The stomach of birds include a structure particularly adapted for grinding
food, the
a-ileum b-jejunum c- entriculus d-crop
17. The ……… is the part of a bird’s eye that is the area of keenest vision
a-pecten b-fovea c-cochlea d-tectum
18. Along with an ability to sense the earth's magnetic field, birds also find
their way during migration by
a-olfactory cues b-auditory cues c- visual cues d-tactile cues
19. Which of the following is the Correct sequence of events in bird
reproduction?
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a- fertilization, addition of albumin, formation of a shell b-formation of shell,
addition of albumin, fertilization c-addition of albumin, fertilization,
formation of shell
20. Most birds practice seasonal ……. due to the necessity of caring for the
young
a-polyandry b-monogamy c) polygyny d-polygamy
21. Fused collar bones in birds also known as a wish bone are called
a-furculum b-sternum c-scapula d-ribs
22. Feathers are modified ………. used for flight and conserving body heat
a-hairs b-nails c-skin d-scales
23. This habit birds practice Involves rubbing their feathers with oil using
their beaks
a-preening b-grooming c-moulting d-mating
24. An example of a flightless, swimming bird is a ………
a-penguin b-quail c-eagle d-gull
25. Which of the following is a defining characteristic of mammals?
a-maintain a constant body temperature b-their young are born alive
c-they suckle their young d-they have four limbs
26. Which living bird lays the worlds' largest egg?
a- vulture b-owl c-ostrich d-eagle
27.Which of the following statements about hair is true?
a-is homologous to feathers b-it is a dermal structure c-it is found in all
mammals d-it is found in all mammals
28-Like reptiles and birds, mammals have ……….kidneys
a-mesonephric b-aglomerular c-metanephric d-unpaired
29. Hair, horns, and nail are composed of
a- carotenes b-keratin c-cerumen d-colostrum
30. The function of vibrissae is for
a- coloration b-lnsulation c-protection against wear d-sensation
31. Mammals have teeth that are differentiated into a variety of tooth types.
This condition is known as a-diphyodont b-heterodont c-monodont d-
homodont
32. Which of the following is not a not a ruminant?
a-horse b-cow c-bison d-goat
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33- Most female mammals are sexually receptive only during
a-diapause b-oestrus c-gestation d-parturition
34. Unlike birds and reptiles, mammals possess 3 bones in the middle ear
a-True b-false
35. Mammalian RBCs may be characterized as nucleated biconcave
corpuscles
a-true b-false
36. Some herbivores like rabbits eat their faeces to aid in complete digestion
a) true b-false
37. All gases exchanged between air and blood in mammals occur across the
walls of the
a- trachea b-bronchi c-alveoli d-bronchioles
38-In thoracic breathing, inhalation is the result of
a- contracting Internal Intercostal muscles b-contracting external intercostal
muscles c-contracting muscles attached to the sternum c-relaxation
39. Mammals can live anywhere and be successful because they are a-
ectotherms b-endotherms c-placental d-marsupilas
40. Large mammals usually have how many offspring at a time
a-3 b-5 c-many d-1
41. Hibernation is a winter period of inactivity in which
a- there is shivering thermogenesis b-mammals dissipate excess heat
c-the hypothalamus of the brain slows the metabolic, heart and respiratory
rates d-none of the above
42. Pheromones secreted by mammals are used for all except a-recognise
members of the opposite sex b-recognise species c-recognise the reproductive
state of the opposite sex d-non-shivering thermogenesis
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