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EBD601S - EVOLUTION AND BIOLOGICAL - 2ND OPP - JULY 2023 |
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l•
nAm I BI A u n IVERS ITV
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF HEALTH,APPLIED SCIENCESAND NATURAL RESOURCES
SCHOOLOF NATURALAND APPLIEDSCIENCES
DEPARTMENT OF BIOLOGY,CHEMISTRYAND PHYSICS
QUALIFICATION: BACHELOR OF SCIENCE
QUALIFICATION CODE: 07BOSC
COURSECODE: EBD601S
LEVEL:6
COURSENAME: EVOLUTION AND BIOLOGICAL
DIVERSITY
SESSION:JULY 2022
PAPER:THEORY
DURATION: 3 HOURS
MARKS: 100
SUPPLEMENTARY/ SECONDOPPORTUNITYEXAMINATION QUESTION PAPER
EXAMINER(S) DR JEYA KENNEDY
MODERATOR: DR MUNYARADZI ZIVUKU
INSTRUCTIONS
1. Answer ALL the questions
2. Write clearly and neatly
3. Number the answers clearly
4. All written work MUST be done in blue or black ink
5. No books, notes and other additional aids are allowed
6. Draw diagrams wherever necessary
PERMISSIBLEMATERIALS
None
THIS QUESTION PAPERCONSISTSOF 6 PAGES
{Including this front page)
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SECTION1: MULTIPLECHOICEQUESTIONS
(10]
• There are 10 multiple choice questions in this section. Each question carries 1 mark.
• Answer ALLquestions by selecting the LETTERwith the correct answer.
1.1 The class of cnidarians in which the medusa and polyp both are found in one animal
is;
a) Anthozoa
b) Hydrozoa
c) Scyphozoa
d) None of the above
1.2 The rotifers reproduce sexually and asexually by ____
a) Parthenogenic
b) Monoecious
c) Diploid
d) Dioecious
eggs.
1.3 Hookworms normally reach the human intestine after they;
a) Are ingested as cysts in contaminated meat
b) Bore directly from the skin of the abdomen to the intestine
c) Enter the host's anus and migrate to the intestine
d) Travel through the blood to the lungs and throat and are then swallowed
1.4 Identify the structures labelled a & c in the figure 1 of an amniote egg in reptile as
shown below.
Exlraembryonic membranes
a
f
Amniotic
cavity
with
amniotic
fluld
e
a) chorion ; yolk sac
b) yolk sac; allantois
c) chorion; amnion
d) allantois ; amnion
Figure 1
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1.5 Bivalves have all of the following structures except;
a} A radula
b} Adductor muscles
c} Siphon
d} Gills
1.6 The heart of a mammal;
a} Contains two chambers, like the heart of a bird
b} Contains four chambers, like the heart of an amphibian
c} Has two completely separate ventricles
d} Allows deoxygenated blood to mix with oxygenated blood
1.7 Which of the following pairs is most closely related?
a} Snake & lizard
b} Crocodile & tuatara
c} Alligator & komodo dragon
d} Alligator & alligator snapping turtle
1.8 The direction that air flows when a frog breathes is controlled by the;
a} Tympanic membrane
b} Floor of the mouth
c} Nostrils
d} Lungs
1.9 What is the subphylum of lancelets?
a} Urochordata
b} Cephalochordata
c} Vertebrata
d} None
1.10 Which ofthe following organs is NOT present in birds?
a} Crop
b} Cloaca
c} Intestine
d} Urinary bladder
QUESTION 2: DEFINE THE FOLLOWING TERMS
[3]
Each answer carries one mark.
2.1 Tagma
2.2 Setae
2.3 Umbo
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QUESTION 3: DISTINGUISH BETWEEN THE PAIRS OF THE FOLLOWING TERMS
[6]
3.1 Cnidocyte; colloblast
(2)
3.2 lncurrent siphon; excurrent siphon
(2)
3.3 Tortoise; Turtles
(2)
QUESTION 4: FILL IN THE BLANK
[7]
4.1 Brittle stars are in the class -------
and have slender -------
that easily break off to escape predators.
(2)
4.2 Metamorphosis in Amphibians is controlled by a hormone called ____
_ {1)
4.3 A ______
feather gives shape to a bird's body and helps a bird balance and
steer during flight.
(1)
4.4 The rotifers reproduce sexually and asexually by ____
eggs.
{1)
4.5 Urochordates are marine, sessile, _________
chordates. Common example is _____
_
feeding invertebrate
(2)
QUESTION 5: ONE-WORD ANSWERS
[8]
Each answer carries one mark.
5.1 Which specialized cell that carries the food to all other parts of the sponge.
5.2 Which phylum is commonly called roundworms or pinworms?
5.3 Name the mollusks without a shell.
5.4 Name the organs of locomotion in Echinodermata are called?
5.5 Name the intermediate host for a fluke.
5.6 Which is the "bony' fish class?
5.7 Which membrane that acts like an eardrum detecting sound for amphibians?
5.8 How many cell layers do the bodies of Ctenophores usually have?
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QUESTION 6: SHORT QUESTIONS
[23)
6.1 Identify the structures in the diagram below in figure 2 and name that worm.
(2)
Figure 2
6.2 What opens and closes bivalve shells?
(2)
6.3 What is the "lip" called and what is its function in earthworm?
(2)
6.4 Name to the two parts of stomach system in Bird.
(2)
6.5 Name the parts of the nematode male reproductive system?
(2)
6.6 Give 2 defense mechanisms used by octopi.
(2)
6.7 Write a short note on the excretory system of earthworm.
(2)
6.8 Name the reptiles which have four-chambered heart.
(2)
6.9 What are the two substances that a sponge's skeleton may be made of? How do
these substances differ?
(3)
6.10 In tabular form, mention the difference between the frog and toad.
(4)
QUESTION 7: LONGER QUESTIONS
[26)
7.1 What are the distinguishing characteristics of platypus.
(5)
7.2 Name the 5 classes of echinoderms with one example each.
(5)
7.3 Tabulate the main differences between shark and ray fish.
(5)
7.4 What are six main features of phylum Cnidarian?
(6)
7.5 In a tabular column form differentiated between Platyhelminthes and Nematode. (5)
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QUESTION 8: SKETCHAND LABELTHE STRUCTURE
[17]
8.1 Sketch the structure of spiders and label its parts.
(7)
8.2 Sketch the flow chart of Phylum Chordata classification with example.
(10}
THE END
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