PUNJAB PUBLIC SERVICE COMMISSION
Combined Competitive Examination (CCE) 2019
For Recruitment to the Posts of Provincial Management Service (PMS)
SUBJECT: Zoology (Paper-1)
Time Allowed: 3 Hours
Maximum Marks: 100
Note: Attempt FIVE questions, at least TWO questions from each section. Attempt in Urdu or English.
SECTION – I
Q. No. 1:
a) Discuss diverse types of parasites of economic importance in protozoans.
b) Elaborate types of canal system in Porifera with examples.
(10 + 10 = 20 Marks)
Q. No. 2:
a) Explain the reasons for the success of arthropods.
b) Discuss diversity in gastropods along with torsion and foot modifications.
(10 + 10 = 20 Marks)
Q. No. 3:
a) Describe the life cycle of liver fluke (Fasciola hepatica).
b) Write a note on larval forms and evolutionary significance of echinoderms.
(10 + 10 = 20 Marks)
Q. No. 4:
Write short notes on any FOUR of the following:
a) Spicules
b) Ascaris life cycle
c) Pseudocoelomate body plan
d) Metamerism
e) Annelid phylogenetic relationship
(4 × 5 = 20 Marks)
SECTION – II
Q. No. 5:
a) Define amplexus. Discuss reproduction in frog.
b) Explain anatomical modifications in birds.
(10 + 10 = 20 Marks)
Q. No. 6:
a) Discuss poisonous apparatus and biting mechanism in poisonous snakes.
b) Write a note on different modifications in mammals for various environments.
(10 + 10 = 20 Marks)
Q. No. 7:
a) Explain thermoregulatory adaptations and strategies of mammals.
b) Give a comparative account of evolution of heart in vertebrates.
(10 + 10 = 20 Marks)
Q. No. 8:
Write short notes on any FOUR of the following:
a) Dentition
b) Stomach in vertebrates
c) Migratory birds
d) Swim bladder
e) Dinosaurs: causes of evolution and extinction
(4 × 5 = 20 Marks)
SUBJECT: Zoology (Paper-II)
Time Allowed: 3 Hours
Maximum Marks: 100
Note: Attempt FIVE questions, including at least ONE question from each section. Attempt in Urdu or English.
SECTION – A
Q. No. 1:
a) Differentiate between transcription and translation. Also explain mechanism of protein synthesis.
b) Differentiate between prokaryotic and eukaryotic cells with structure.
(10 + 10 = 20 Marks)
Q. No. 2:
a) Describe various models of plasma membrane. Which model is dynamic and why?
b) Describe role of cytoskeleton during mitosis with emphasis on mitotic spindle.
(10 + 10 = 20 Marks)
SECTION – B
Q. No. 3:
a) Define osmoregulation. Discuss role of nephron in osmoregulation.
b) Differentiate between skeletal, cardiac and smooth muscles and explain their mechanism.
(10 + 10 = 20 Marks)
Q. No. 4:
a) Define pulmonary volumes and capacities with diagram.
b) Describe mechanism of self-excitation and rhythmicity in mammalian heart.
(10 + 10 = 20 Marks)
SECTION – C
Q. No. 5:
a) What are chromosomal aberrations? Describe numerical disorders.
b) Write a detailed note on DNA as genetic material.
(10 + 10 = 20 Marks)
Q. No. 6:
a) What is tetrad analysis? Why is Neurospora suitable for study of crossing over?
b) Discuss significance and role of polyploidy in evolution. Which is more important in speciation, autopolyploidy or allopolyploidy?
(10 + 10 = 20 Marks)
SECTION – D
Q. No. 7:
a) Differentiate between:
i) Mutation pressure and selection pressure
ii) Adaptive radiation and natural selection
b) Define speciation and describe its types.
(10 + 10 = 20 Marks)
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